/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=0.1 --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_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:12:32,410 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:12:32,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:12:32,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:12:32,445 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:12:32,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:12:32,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:12:32,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:12:32,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:12:32,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:12:32,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:12:32,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:12:32,456 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:12:32,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:12:32,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:12:32,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:12:32,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:12:32,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:12:32,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:12:32,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:12:32,469 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:12:32,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:12:32,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:12:32,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:12:32,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:12:32,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:12:32,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:12:32,479 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:12:32,480 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:12:32,481 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:12:32,481 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:12:32,482 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:12:32,483 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:12:32,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:12:32,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:12:32,486 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:12:32,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:12:32,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:12:32,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:12:32,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:12:32,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:12:32,490 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 10:12:32,519 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:12:32,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:12:32,521 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:12:32,522 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:12:32,522 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:12:32,522 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:12:32,522 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:12:32,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:12:32,523 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:12:32,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:12:32,523 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:12:32,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:12:32,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:12:32,524 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:12:32,524 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:12:32,524 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:12:32,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:12:32,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:12:32,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:12:32,525 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:12:32,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:12:32,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:12:32,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:12:32,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:12:32,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:12:32,526 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:12:32,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:12:32,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:12:32,527 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:12:32,527 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:12:32,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:12:33,006 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:12:33,013 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:12:33,015 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:12:33,016 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:12:33,017 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label43.c [2020-09-25 10:12:33,113 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59afc2637/1f27dcafe2da434ca415412f4f133a3c/FLAG5124350fb [2020-09-25 10:12:33,797 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:12:33,798 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label43.c [2020-09-25 10:12:33,827 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59afc2637/1f27dcafe2da434ca415412f4f133a3c/FLAG5124350fb [2020-09-25 10:12:33,989 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59afc2637/1f27dcafe2da434ca415412f4f133a3c [2020-09-25 10:12:34,003 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:12:34,008 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:12:34,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:12:34,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:12:34,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:12:34,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:12:33" (1/1) ... [2020-09-25 10:12:34,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347c51ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:34, skipping insertion in model container [2020-09-25 10:12:34,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:12:33" (1/1) ... [2020-09-25 10:12:34,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:12:34,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:12:34,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:12:34,714 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:12:34,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:12:34,891 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:12:34,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:34 WrapperNode [2020-09-25 10:12:34,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:12:34,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:12:34,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:12:34,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:12:34,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:34" (1/1) ... [2020-09-25 10:12:34,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:34" (1/1) ... [2020-09-25 10:12:34,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:34" (1/1) ... [2020-09-25 10:12:34,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:34" (1/1) ... [2020-09-25 10:12:34,975 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:34" (1/1) ... [2020-09-25 10:12:34,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:34" (1/1) ... [2020-09-25 10:12:35,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:34" (1/1) ... [2020-09-25 10:12:35,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:12:35,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:12:35,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:12:35,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:12:35,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:12:35,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:12:35,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:12:35,134 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:12:35,134 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:12:35,135 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:12:35,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:12:35,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:12:35,136 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:12:35,136 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:12:35,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:12:35,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:12:36,907 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:12:36,907 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:12:36,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:12:36 BoogieIcfgContainer [2020-09-25 10:12:36,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:12:36,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:12:36,918 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:12:36,922 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:12:36,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:12:33" (1/3) ... [2020-09-25 10:12:36,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b01f935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:12:36, skipping insertion in model container [2020-09-25 10:12:36,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:34" (2/3) ... [2020-09-25 10:12:36,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b01f935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:12:36, skipping insertion in model container [2020-09-25 10:12:36,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:12:36" (3/3) ... [2020-09-25 10:12:36,927 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label43.c [2020-09-25 10:12:36,940 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:12:36,952 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:12:36,976 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:12:37,012 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:12:37,012 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:12:37,012 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:12:37,013 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:12:37,013 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:12:37,013 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:12:37,013 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:12:37,013 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:12:37,047 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 10:12:37,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 10:12:37,059 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:37,061 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] [2020-09-25 10:12:37,061 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:37,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:37,070 INFO L82 PathProgramCache]: Analyzing trace with hash -495691305, now seen corresponding path program 1 times [2020-09-25 10:12:37,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:37,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214183840] [2020-09-25 10:12:37,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:37,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:37,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:37,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:38,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:38,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 10:12:38,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:12:38,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 773 [2020-09-25 10:12:38,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:38,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:38,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:12:38,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 10:12:38,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 10:12:38,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:12:38,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:38,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:38,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:38,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:38,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:38,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 10:12:38,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:38,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:38,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:38,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:38,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:12:38,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 44 [2020-09-25 10:12:38,296 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 10:12:38,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214183840] [2020-09-25 10:12:38,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:12:38,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:12:38,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479766327] [2020-09-25 10:12:38,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:12:38,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:38,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:12:38,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:12:38,342 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 10:12:40,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:40,594 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-25 10:12:40,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:12:40,597 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-09-25 10:12:40,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:40,621 INFO L225 Difference]: With dead ends: 1089 [2020-09-25 10:12:40,621 INFO L226 Difference]: Without dead ends: 575 [2020-09-25 10:12:40,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:12:40,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-25 10:12:40,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-25 10:12:40,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 10:12:40,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-25 10:12:40,733 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 54 [2020-09-25 10:12:40,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:40,736 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-25 10:12:40,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:12:40,737 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-25 10:12:40,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 10:12:40,749 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:40,749 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:12:40,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:12:40,750 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:40,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:40,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1783140025, now seen corresponding path program 1 times [2020-09-25 10:12:40,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:40,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671861298] [2020-09-25 10:12:40,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:40,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:41,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:41,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:41,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:41,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:45,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:45,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 10:12:45,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:12:45,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 10:12:45,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:45,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:45,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:12:45,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:12:45,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 10:12:45,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:45,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:45,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:45,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:45,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:45,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:45,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 10:12:45,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:45,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:45,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:45,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:45,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:12:45,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:12:46,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:46,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:46,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:46,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:46,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:46,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:12:46,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:46,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-09-25 10:12:46,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:46,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:46,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:12:46,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:46,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:12:46,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:46,361 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:12:46,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671861298] [2020-09-25 10:12:46,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:46,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:12:46,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739178] [2020-09-25 10:12:46,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:12:46,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:46,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:12:46,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:12:46,366 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 7 states. [2020-09-25 10:12:48,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:48,898 INFO L93 Difference]: Finished difference Result 1189 states and 1534 transitions. [2020-09-25 10:12:48,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 10:12:48,898 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2020-09-25 10:12:48,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:48,913 INFO L225 Difference]: With dead ends: 1189 [2020-09-25 10:12:48,913 INFO L226 Difference]: Without dead ends: 1187 [2020-09-25 10:12:48,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:12:48,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2020-09-25 10:12:48,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 851. [2020-09-25 10:12:48,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 851 states. [2020-09-25 10:12:49,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1112 transitions. [2020-09-25 10:12:49,003 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1112 transitions. Word has length 133 [2020-09-25 10:12:49,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:49,004 INFO L479 AbstractCegarLoop]: Abstraction has 851 states and 1112 transitions. [2020-09-25 10:12:49,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:12:49,004 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1112 transitions. [2020-09-25 10:12:49,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 10:12:49,012 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:49,012 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:12:49,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:12:49,013 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:49,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:49,013 INFO L82 PathProgramCache]: Analyzing trace with hash -412359152, now seen corresponding path program 1 times [2020-09-25 10:12:49,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:49,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676877082] [2020-09-25 10:12:49,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:49,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:49,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:49,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:49,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:50,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:50,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:54,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:54,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 10:12:54,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:12:54,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 10:12:54,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:54,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:54,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:12:54,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:12:54,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 10:12:54,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:12:54,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:54,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:54,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:54,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:54,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:54,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:12:54,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:54,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:54,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:12:54,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:54,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:12:54,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:54,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:54,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:54,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:54,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:54,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:54,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 10:12:54,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:54,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-25 10:12:54,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:54,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:54,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:12:54,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:54,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 10:12:54,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:54,876 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:12:54,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676877082] [2020-09-25 10:12:54,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:54,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 10:12:54,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404208732] [2020-09-25 10:12:54,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:12:54,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:54,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:12:54,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:12:54,879 INFO L87 Difference]: Start difference. First operand 851 states and 1112 transitions. Second operand 12 states. [2020-09-25 10:12:58,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:58,023 INFO L93 Difference]: Finished difference Result 2041 states and 2751 transitions. [2020-09-25 10:12:58,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:12:58,023 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 137 [2020-09-25 10:12:58,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:58,040 INFO L225 Difference]: With dead ends: 2041 [2020-09-25 10:12:58,041 INFO L226 Difference]: Without dead ends: 1163 [2020-09-25 10:12:58,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=130, Invalid=212, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:12:58,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2020-09-25 10:12:58,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 993. [2020-09-25 10:12:58,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 993 states. [2020-09-25 10:12:58,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1261 transitions. [2020-09-25 10:12:58,119 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1261 transitions. Word has length 137 [2020-09-25 10:12:58,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:58,120 INFO L479 AbstractCegarLoop]: Abstraction has 993 states and 1261 transitions. [2020-09-25 10:12:58,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:12:58,121 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1261 transitions. [2020-09-25 10:12:58,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 10:12:58,131 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:58,132 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:12:58,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:12:58,132 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:58,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:58,134 INFO L82 PathProgramCache]: Analyzing trace with hash -109496539, now seen corresponding path program 1 times [2020-09-25 10:12:58,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:58,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121663960] [2020-09-25 10:12:58,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:58,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:58,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:58,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:58,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:59,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:59,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:00,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:00,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 10:13:00,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:13:00,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2598 [2020-09-25 10:13:00,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:00,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:00,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:13:00,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:13:00,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 10:13:00,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:00,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:00,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:00,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:00,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:00,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:00,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:13:00,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:00,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:00,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:00,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:00,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:13:00,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:00,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:00,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:01,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:01,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:13:01,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:01,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 10:13:01,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:01,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:01,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:13:01,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:01,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:13:01,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:01,128 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:13:01,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121663960] [2020-09-25 10:13:01,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:01,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:13:01,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31422327] [2020-09-25 10:13:01,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:13:01,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:01,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:13:01,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:13:01,131 INFO L87 Difference]: Start difference. First operand 993 states and 1261 transitions. Second operand 8 states. [2020-09-25 10:13:04,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:04,253 INFO L93 Difference]: Finished difference Result 3355 states and 4509 transitions. [2020-09-25 10:13:04,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:13:04,254 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 143 [2020-09-25 10:13:04,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:04,269 INFO L225 Difference]: With dead ends: 3355 [2020-09-25 10:13:04,269 INFO L226 Difference]: Without dead ends: 2377 [2020-09-25 10:13:04,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:13:04,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2377 states. [2020-09-25 10:13:04,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2377 to 1965. [2020-09-25 10:13:04,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2020-09-25 10:13:04,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 2538 transitions. [2020-09-25 10:13:04,392 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 2538 transitions. Word has length 143 [2020-09-25 10:13:04,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:04,393 INFO L479 AbstractCegarLoop]: Abstraction has 1965 states and 2538 transitions. [2020-09-25 10:13:04,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:13:04,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 2538 transitions. [2020-09-25 10:13:04,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-25 10:13:04,399 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:04,399 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 10:13:04,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:13:04,399 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:04,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:04,400 INFO L82 PathProgramCache]: Analyzing trace with hash -313986774, now seen corresponding path program 1 times [2020-09-25 10:13:04,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:04,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575796807] [2020-09-25 10:13:04,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:04,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:04,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:05,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:06,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:07,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:07,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:07,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:09,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:09,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-09-25 10:13:09,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:13:09,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 10:13:09,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:09,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:09,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:13:09,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:13:09,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-09-25 10:13:09,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:09,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:09,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:09,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:09,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:09,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:09,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 10:13:09,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:09,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:09,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:13:09,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:09,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:13:09,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:09,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:09,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:09,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:09,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:09,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 10:13:09,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:09,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-25 10:13:09,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:09,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:09,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:13:09,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:09,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 10:13:09,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:10,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-25 10:13:10,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:10,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:10,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:10,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:10,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:13:10,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:10,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-09-25 10:13:10,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:10,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:10,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:13:10,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:10,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 10:13:10,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:10,706 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-25 10:13:10,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575796807] [2020-09-25 10:13:10,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:10,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 10:13:10,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455130807] [2020-09-25 10:13:10,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:13:10,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:10,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:13:10,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:13:10,708 INFO L87 Difference]: Start difference. First operand 1965 states and 2538 transitions. Second operand 12 states. [2020-09-25 10:13:16,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:16,014 INFO L93 Difference]: Finished difference Result 6534 states and 8941 transitions. [2020-09-25 10:13:16,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 10:13:16,015 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 229 [2020-09-25 10:13:16,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:16,040 INFO L225 Difference]: With dead ends: 6534 [2020-09-25 10:13:16,040 INFO L226 Difference]: Without dead ends: 4516 [2020-09-25 10:13:16,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=213, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:13:16,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4516 states. [2020-09-25 10:13:16,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4516 to 3805. [2020-09-25 10:13:16,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3805 states. [2020-09-25 10:13:16,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3805 states to 3805 states and 4950 transitions. [2020-09-25 10:13:16,188 INFO L78 Accepts]: Start accepts. Automaton has 3805 states and 4950 transitions. Word has length 229 [2020-09-25 10:13:16,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:16,189 INFO L479 AbstractCegarLoop]: Abstraction has 3805 states and 4950 transitions. [2020-09-25 10:13:16,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:13:16,189 INFO L276 IsEmpty]: Start isEmpty. Operand 3805 states and 4950 transitions. [2020-09-25 10:13:16,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-09-25 10:13:16,201 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:16,202 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 10:13:16,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:13:16,202 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:16,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:16,203 INFO L82 PathProgramCache]: Analyzing trace with hash 807106148, now seen corresponding path program 1 times [2020-09-25 10:13:16,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:16,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138341890] [2020-09-25 10:13:16,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:16,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:16,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:16,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:17,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:18,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:20,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking...