/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --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/Problem01_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:25:58,374 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:25:58,378 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:25:58,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:25:58,422 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:25:58,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:25:58,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:25:58,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:25:58,440 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:25:58,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:25:58,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:25:58,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:25:58,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:25:58,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:25:58,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:25:58,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:25:58,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:25:58,455 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:25:58,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:25:58,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:25:58,461 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:25:58,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:25:58,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:25:58,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:25:58,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:25:58,471 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:25:58,472 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:25:58,476 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:25:58,477 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:25:58,478 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:25:58,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:25:58,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:25:58,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:25:58,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:25:58,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:25:58,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:25:58,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:25:58,484 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:25:58,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:25:58,485 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:25:58,486 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:25:58,488 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 04:25:58,533 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:25:58,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:25:58,536 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:25:58,536 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:25:58,537 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:25:58,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:25:58,537 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:25:58,538 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:25:58,538 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:25:58,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:25:58,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:25:58,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:25:58,539 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:25:58,540 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:25:58,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:25:58,540 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:25:58,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:25:58,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:25:58,541 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:25:58,541 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:25:58,541 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:25:58,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:25:58,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:25:58,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:25:58,542 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:25:58,542 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:25:58,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:25:58,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:25:58,543 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:25:58,543 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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:25:58,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:25:58,999 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:25:59,003 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:25:59,005 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:25:59,005 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:25:59,006 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label54.c [2020-09-25 04:25:59,085 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd82fbc30/f30bef69c235411183c81f151ee58749/FLAG08194ad14 [2020-09-25 04:25:59,763 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:25:59,764 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label54.c [2020-09-25 04:25:59,777 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd82fbc30/f30bef69c235411183c81f151ee58749/FLAG08194ad14 [2020-09-25 04:25:59,985 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd82fbc30/f30bef69c235411183c81f151ee58749 [2020-09-25 04:25:59,999 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:26:00,006 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:26:00,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:26:00,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:26:00,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:26:00,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:25:59" (1/1) ... [2020-09-25 04:26:00,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fe12ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:00, skipping insertion in model container [2020-09-25 04:26:00,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:25:59" (1/1) ... [2020-09-25 04:26:00,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:26:00,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:26:00,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:26:00,582 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:26:00,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:26:00,877 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:26:00,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:00 WrapperNode [2020-09-25 04:26:00,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:26:00,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:26:00,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:26:00,880 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:26:00,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:00" (1/1) ... [2020-09-25 04:26:00,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:00" (1/1) ... [2020-09-25 04:26:00,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:00" (1/1) ... [2020-09-25 04:26:00,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:00" (1/1) ... [2020-09-25 04:26:00,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:00" (1/1) ... [2020-09-25 04:26:00,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:00" (1/1) ... [2020-09-25 04:26:01,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:00" (1/1) ... [2020-09-25 04:26:01,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:26:01,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:26:01,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:26:01,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:26:01,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:00" (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 04:26:01,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:26:01,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:26:01,086 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:26:01,086 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:26:01,087 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:26:01,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:26:01,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:26:01,087 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:26:01,087 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:26:01,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:26:01,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:26:02,407 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:26:02,407 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:26:02,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:26:02 BoogieIcfgContainer [2020-09-25 04:26:02,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:26:02,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:26:02,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:26:02,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:26:02,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:25:59" (1/3) ... [2020-09-25 04:26:02,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d1df6a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:26:02, skipping insertion in model container [2020-09-25 04:26:02,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:00" (2/3) ... [2020-09-25 04:26:02,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d1df6a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:26:02, skipping insertion in model container [2020-09-25 04:26:02,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:26:02" (3/3) ... [2020-09-25 04:26:02,427 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label54.c [2020-09-25 04:26:02,441 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:26:02,453 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:26:02,478 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:26:02,515 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:26:02,516 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:26:02,516 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:26:02,516 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:26:02,516 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:26:02,516 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:26:02,516 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:26:02,517 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:26:02,550 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 04:26:02,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 04:26:02,572 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:02,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:26:02,575 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:02,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:02,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1970187929, now seen corresponding path program 1 times [2020-09-25 04:26:02,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:02,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304694061] [2020-09-25 04:26:02,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:03,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:03,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:03,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:04,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:06,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:07,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:07,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:07,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:07,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 04:26:07,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:26:07,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-09-25 04:26:07,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:07,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:07,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:26:07,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 04:26:07,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 04:26:07,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:26:08,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:08,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:08,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:08,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:08,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:08,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 04:26:08,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:08,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:08,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:08,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:08,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 04:26:08,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:08,307 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 04:26:08,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304694061] [2020-09-25 04:26:08,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:26:08,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:26:08,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894534637] [2020-09-25 04:26:08,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:26:08,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:08,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:26:08,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:26:08,345 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 04:26:10,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:10,498 INFO L93 Difference]: Finished difference Result 1212 states and 1611 transitions. [2020-09-25 04:26:10,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:26:10,500 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-09-25 04:26:10,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:10,536 INFO L225 Difference]: With dead ends: 1212 [2020-09-25 04:26:10,537 INFO L226 Difference]: Without dead ends: 638 [2020-09-25 04:26:10,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 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 04:26:10,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-09-25 04:26:10,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 603. [2020-09-25 04:26:10,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 04:26:10,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 04:26:10,715 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 150 [2020-09-25 04:26:10,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:10,716 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 04:26:10,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:26:10,717 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 04:26:10,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 04:26:10,727 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:10,727 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:26:10,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:26:10,728 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:10,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:10,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1973679864, now seen corresponding path program 1 times [2020-09-25 04:26:10,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:10,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859934630] [2020-09-25 04:26:10,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:10,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:10,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:10,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:12,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:12,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:12,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:12,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:15,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:15,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 04:26:15,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:26:15,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 04:26:15,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:15,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:15,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:26:15,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 04:26:15,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 04:26:15,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:26:15,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:15,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:15,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:15,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:15,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:15,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 04:26:15,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:15,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:15,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:15,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:15,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:26:15,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 04:26:15,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:15,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:16,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:16,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:26:16,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:16,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 04:26:16,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:16,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:16,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:16,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:26:16,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:26:16,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:16,091 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:26:16,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859934630] [2020-09-25 04:26:16,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:26:16,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:26:16,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048488089] [2020-09-25 04:26:16,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:26:16,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:16,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:26:16,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:26:16,097 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-25 04:26:18,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:18,219 INFO L93 Difference]: Finished difference Result 1536 states and 1909 transitions. [2020-09-25 04:26:18,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 04:26:18,222 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 171 [2020-09-25 04:26:18,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:18,229 INFO L225 Difference]: With dead ends: 1536 [2020-09-25 04:26:18,229 INFO L226 Difference]: Without dead ends: 957 [2020-09-25 04:26:18,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:26:18,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2020-09-25 04:26:18,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 899. [2020-09-25 04:26:18,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2020-09-25 04:26:18,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1095 transitions. [2020-09-25 04:26:18,277 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1095 transitions. Word has length 171 [2020-09-25 04:26:18,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:18,278 INFO L479 AbstractCegarLoop]: Abstraction has 899 states and 1095 transitions. [2020-09-25 04:26:18,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:26:18,278 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1095 transitions. [2020-09-25 04:26:18,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 04:26:18,283 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:18,284 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:26:18,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:26:18,284 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:18,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:18,285 INFO L82 PathProgramCache]: Analyzing trace with hash 996248242, now seen corresponding path program 1 times [2020-09-25 04:26:18,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:18,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939972255] [2020-09-25 04:26:18,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:18,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:18,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:18,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:21,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:21,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:22,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:23,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:23,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-09-25 04:26:23,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:26:23,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 04:26:23,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:23,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:23,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:23,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 04:26:23,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 04:26:23,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:23,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:23,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:23,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:23,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:23,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:23,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:23,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:26:23,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:23,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:23,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:23,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:23,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:23,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:23,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:23,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:23,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:23,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:23,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:26:23,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:23,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 04:26:23,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:23,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:23,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:23,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:23,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:26:23,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:23,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 04:26:23,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:23,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:23,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:23,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 04:26:23,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:23,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 04:26:23,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:23,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:23,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:23,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:26:23,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 04:26:23,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:23,863 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:26:23,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939972255] [2020-09-25 04:26:23,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:23,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:26:23,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101953318] [2020-09-25 04:26:23,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:26:23,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:23,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:26:23,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:26:23,866 INFO L87 Difference]: Start difference. First operand 899 states and 1095 transitions. Second operand 7 states. [2020-09-25 04:26:26,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:26,292 INFO L93 Difference]: Finished difference Result 2101 states and 2638 transitions. [2020-09-25 04:26:26,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 04:26:26,293 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2020-09-25 04:26:26,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:26,308 INFO L225 Difference]: With dead ends: 2101 [2020-09-25 04:26:26,309 INFO L226 Difference]: Without dead ends: 1226 [2020-09-25 04:26:26,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:26:26,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2020-09-25 04:26:26,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1048. [2020-09-25 04:26:26,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1048 states. [2020-09-25 04:26:26,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1304 transitions. [2020-09-25 04:26:26,376 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1304 transitions. Word has length 212 [2020-09-25 04:26:26,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:26,377 INFO L479 AbstractCegarLoop]: Abstraction has 1048 states and 1304 transitions. [2020-09-25 04:26:26,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:26:26,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1304 transitions. [2020-09-25 04:26:26,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 04:26:26,385 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:26,386 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:26:26,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:26:26,386 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:26,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:26,387 INFO L82 PathProgramCache]: Analyzing trace with hash 19036305, now seen corresponding path program 1 times [2020-09-25 04:26:26,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:26,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717249689] [2020-09-25 04:26:26,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:26,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:26,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:26,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:26,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:27,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:27,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:28,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:28,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:28,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:28,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:29,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:31,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:31,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-09-25 04:26:31,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:26:31,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 04:26:31,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:31,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:31,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:26:31,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 04:26:31,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 04:26:31,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:26:31,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:31,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:31,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:31,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:31,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:31,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:26:31,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:31,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:31,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:31,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:31,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:31,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:31,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:31,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:31,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:31,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 04:26:31,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:31,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 04:26:31,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:31,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:31,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:26:31,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:31,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:26:31,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:31,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 04:26:31,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:31,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:31,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:31,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 04:26:31,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:31,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 04:26:31,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:31,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:31,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:31,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:26:31,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 04:26:31,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:31,863 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:26:31,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717249689] [2020-09-25 04:26:31,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:31,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:26:31,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697545994] [2020-09-25 04:26:31,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:26:31,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:31,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:26:31,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:26:31,867 INFO L87 Difference]: Start difference. First operand 1048 states and 1304 transitions. Second operand 8 states. [2020-09-25 04:26:35,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:35,082 INFO L93 Difference]: Finished difference Result 2803 states and 3580 transitions. [2020-09-25 04:26:35,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 04:26:35,083 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 219 [2020-09-25 04:26:35,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:35,098 INFO L225 Difference]: With dead ends: 2803 [2020-09-25 04:26:35,098 INFO L226 Difference]: Without dead ends: 1779 [2020-09-25 04:26:35,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-09-25 04:26:35,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1779 states. [2020-09-25 04:26:35,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1779 to 1670. [2020-09-25 04:26:35,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1670 states. [2020-09-25 04:26:35,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1670 states to 1670 states and 2062 transitions. [2020-09-25 04:26:35,184 INFO L78 Accepts]: Start accepts. Automaton has 1670 states and 2062 transitions. Word has length 219 [2020-09-25 04:26:35,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:35,186 INFO L479 AbstractCegarLoop]: Abstraction has 1670 states and 2062 transitions. [2020-09-25 04:26:35,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:26:35,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1670 states and 2062 transitions. [2020-09-25 04:26:35,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-09-25 04:26:35,197 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:35,197 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:26:35,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:26:35,198 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:35,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:35,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1783992526, now seen corresponding path program 1 times [2020-09-25 04:26:35,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:35,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457178210] [2020-09-25 04:26:35,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:35,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:35,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:35,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:35,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:35,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:35,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:36,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:36,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:39,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:39,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:39,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:39,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:40,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:40,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:40,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:40,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-09-25 04:26:40,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 04:26:40,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 04:26:40,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:40,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:40,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:40,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-09-25 04:26:40,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-25 04:26:40,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:26:40,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:40,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:40,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:40,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:40,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:40,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:26:40,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:40,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:40,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:40,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:40,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:40,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:40,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:40,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:40,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:40,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 04:26:40,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:40,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:26:40,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:40,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:40,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:40,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:40,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:40,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:26:40,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 04:26:40,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:40,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:40,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:40,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 04:26:40,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:40,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 04:26:40,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:40,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:40,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:40,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:40,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 04:26:40,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:26:40,565 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 04:26:40,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457178210] [2020-09-25 04:26:40,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:40,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:26:40,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023312895] [2020-09-25 04:26:40,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:26:40,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:40,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:26:40,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:26:40,568 INFO L87 Difference]: Start difference. First operand 1670 states and 2062 transitions. Second operand 5 states. [2020-09-25 04:26:42,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:42,345 INFO L93 Difference]: Finished difference Result 3396 states and 4193 transitions. [2020-09-25 04:26:42,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:26:42,346 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 234 [2020-09-25 04:26:42,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:42,365 INFO L225 Difference]: With dead ends: 3396 [2020-09-25 04:26:42,365 INFO L226 Difference]: Without dead ends: 1750 [2020-09-25 04:26:42,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:26:42,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2020-09-25 04:26:42,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1523. [2020-09-25 04:26:42,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1523 states. [2020-09-25 04:26:42,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 1799 transitions. [2020-09-25 04:26:42,462 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 1799 transitions. Word has length 234 [2020-09-25 04:26:42,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:42,463 INFO L479 AbstractCegarLoop]: Abstraction has 1523 states and 1799 transitions. [2020-09-25 04:26:42,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:26:42,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 1799 transitions. [2020-09-25 04:26:42,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-25 04:26:42,472 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:42,472 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:26:42,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:26:42,473 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:42,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:42,473 INFO L82 PathProgramCache]: Analyzing trace with hash -2098605994, now seen corresponding path program 1 times [2020-09-25 04:26:42,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:42,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331225403] [2020-09-25 04:26:42,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:42,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:42,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:42,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:42,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:42,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:42,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:43,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:43,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:43,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:43,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:43,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking...