/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=1.0 --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_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:05:36,415 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:05:36,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:05:36,469 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:05:36,469 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:05:36,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:05:36,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:05:36,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:05:36,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:05:36,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:05:36,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:05:36,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:05:36,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:05:36,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:05:36,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:05:36,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:05:36,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:05:36,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:05:36,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:05:36,515 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:05:36,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:05:36,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:05:36,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:05:36,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:05:36,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:05:36,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:05:36,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:05:36,531 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:05:36,532 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:05:36,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:05:36,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:05:36,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:05:36,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:05:36,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:05:36,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:05:36,539 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:05:36,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:05:36,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:05:36,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:05:36,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:05:36,543 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:05:36,544 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 09:05:36,592 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:05:36,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:05:36,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:05:36,595 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:05:36,595 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:05:36,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:05:36,596 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:05:36,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:05:36,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:05:36,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:05:36,598 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:05:36,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:05:36,598 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:05:36,599 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:05:36,599 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:05:36,599 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:05:36,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:05:36,600 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:05:36,600 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:05:36,600 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:05:36,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:05:36,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:05:36,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:05:36,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:05:36,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:05:36,601 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:05:36,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:05:36,602 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:05:36,602 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:05:36,602 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 09:05:37,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:05:37,081 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:05:37,086 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:05:37,088 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:05:37,089 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:05:37,090 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label33.c [2020-09-25 09:05:37,183 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0dbc035cb/700780c387144861a4a2aad4e3702660/FLAGd0a0ab687 [2020-09-25 09:05:37,834 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:05:37,835 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label33.c [2020-09-25 09:05:37,857 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0dbc035cb/700780c387144861a4a2aad4e3702660/FLAGd0a0ab687 [2020-09-25 09:05:38,070 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0dbc035cb/700780c387144861a4a2aad4e3702660 [2020-09-25 09:05:38,085 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:05:38,092 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:05:38,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:05:38,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:05:38,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:05:38,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:05:38" (1/1) ... [2020-09-25 09:05:38,106 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 09:05:38, skipping insertion in model container [2020-09-25 09:05:38,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:05:38" (1/1) ... [2020-09-25 09:05:38,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:05:38,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:05:38,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:05:38,768 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:05:38,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:05:38,936 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:05:38,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:38 WrapperNode [2020-09-25 09:05:38,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:05:38,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:05:38,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:05:38,939 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:05:38,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:38" (1/1) ... [2020-09-25 09:05:38,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:38" (1/1) ... [2020-09-25 09:05:38,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:38" (1/1) ... [2020-09-25 09:05:38,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:38" (1/1) ... [2020-09-25 09:05:39,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:38" (1/1) ... [2020-09-25 09:05:39,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:38" (1/1) ... [2020-09-25 09:05:39,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:38" (1/1) ... [2020-09-25 09:05:39,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:05:39,048 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:05:39,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:05:39,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:05:39,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:38" (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 09:05:39,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:05:39,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:05:39,127 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:05:39,127 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:05:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:05:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:05:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:05:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:05:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:05:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:05:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:05:40,646 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:05:40,646 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:05:40,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:05:40 BoogieIcfgContainer [2020-09-25 09:05:40,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:05:40,657 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:05:40,657 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:05:40,661 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:05:40,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:05:38" (1/3) ... [2020-09-25 09:05:40,663 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 09:05:40, skipping insertion in model container [2020-09-25 09:05:40,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:38" (2/3) ... [2020-09-25 09:05:40,663 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 09:05:40, skipping insertion in model container [2020-09-25 09:05:40,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:05:40" (3/3) ... [2020-09-25 09:05:40,666 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label33.c [2020-09-25 09:05:40,678 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:05:40,690 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:05:40,715 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:05:40,751 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:05:40,751 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:05:40,752 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:05:40,752 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:05:40,752 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:05:40,752 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:05:40,752 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:05:40,753 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:05:40,789 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 09:05:40,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 09:05:40,801 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:40,802 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] [2020-09-25 09:05:40,803 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:40,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:40,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1274135065, now seen corresponding path program 1 times [2020-09-25 09:05:40,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:40,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214183840] [2020-09-25 09:05:40,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:41,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:41,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:41,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:41,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:42,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:42,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 09:05:42,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:05:42,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1341 [2020-09-25 09:05:42,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:42,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:42,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:05:42,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:05:42,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 09:05:42,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:05:42,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:42,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:42,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:42,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:42,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:42,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 09:05:42,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:42,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:42,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:42,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:42,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:05:42,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:42,538 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 09:05:42,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214183840] [2020-09-25 09:05:42,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:05:42,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:05:42,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616193041] [2020-09-25 09:05:42,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:05:42,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:42,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:05:42,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:05:42,573 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 09:05:44,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:44,950 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-25 09:05:44,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:05:44,952 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-09-25 09:05:44,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:44,992 INFO L225 Difference]: With dead ends: 1160 [2020-09-25 09:05:44,992 INFO L226 Difference]: Without dead ends: 631 [2020-09-25 09:05:45,002 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 09:05:45,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-25 09:05:45,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-25 09:05:45,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-25 09:05:45,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-25 09:05:45,113 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 63 [2020-09-25 09:05:45,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:45,114 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-25 09:05:45,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:05:45,115 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-25 09:05:45,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 09:05:45,123 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:45,123 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:45,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:05:45,124 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:45,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:45,125 INFO L82 PathProgramCache]: Analyzing trace with hash 821407407, now seen corresponding path program 1 times [2020-09-25 09:05:45,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:45,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969241015] [2020-09-25 09:05:45,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:45,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:45,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:45,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:45,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:46,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:46,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:47,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:47,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:47,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:47,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:50,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:50,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 09:05:50,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 09:05:50,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 09:05:50,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:50,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:50,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:05:50,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:05:50,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 09:05:50,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:05:50,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:50,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:50,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:50,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:50,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:50,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 09:05:50,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:50,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:50,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:05:50,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:50,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:05:50,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:50,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:50,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:50,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:50,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:50,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 09:05:50,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:50,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-09-25 09:05:50,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:50,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:50,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:05:50,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:50,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:05:50,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:50,840 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:50,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969241015] [2020-09-25 09:05:50,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:50,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:05:50,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695457996] [2020-09-25 09:05:50,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:05:50,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:50,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:05:50,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:05:50,845 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 10 states. [2020-09-25 09:05:54,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:54,263 INFO L93 Difference]: Finished difference Result 1663 states and 2149 transitions. [2020-09-25 09:05:54,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:05:54,264 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 146 [2020-09-25 09:05:54,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:54,271 INFO L225 Difference]: With dead ends: 1663 [2020-09-25 09:05:54,272 INFO L226 Difference]: Without dead ends: 1083 [2020-09-25 09:05:54,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 09:05:54,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2020-09-25 09:05:54,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1032. [2020-09-25 09:05:54,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2020-09-25 09:05:54,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1253 transitions. [2020-09-25 09:05:54,331 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1253 transitions. Word has length 146 [2020-09-25 09:05:54,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:54,334 INFO L479 AbstractCegarLoop]: Abstraction has 1032 states and 1253 transitions. [2020-09-25 09:05:54,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:05:54,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1253 transitions. [2020-09-25 09:05:54,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 09:05:54,344 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:54,345 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:54,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:05:54,345 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:54,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:54,346 INFO L82 PathProgramCache]: Analyzing trace with hash -651267958, now seen corresponding path program 1 times [2020-09-25 09:05:54,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:54,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1783660280] [2020-09-25 09:05:54,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:54,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:54,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:54,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:54,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:54,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:54,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:55,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:55,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:55,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:59,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:59,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 09:05:59,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:05:59,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 09:05:59,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:59,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:59,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:05:59,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:05:59,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 09:05:59,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:59,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:59,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:59,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:59,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:59,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:59,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:59,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:05:59,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:59,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:59,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:59,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:59,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:05:59,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:59,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:59,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:59,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:59,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:59,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 09:05:59,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:59,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 09:05:59,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:59,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:59,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:59,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:05:59,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 09:05:59,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:59,780 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:05:59,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1783660280] [2020-09-25 09:05:59,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:59,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:05:59,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459429670] [2020-09-25 09:05:59,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:05:59,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:59,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:05:59,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:05:59,783 INFO L87 Difference]: Start difference. First operand 1032 states and 1253 transitions. Second operand 6 states. [2020-09-25 09:06:01,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:01,328 INFO L93 Difference]: Finished difference Result 1710 states and 2206 transitions. [2020-09-25 09:06:01,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:06:01,330 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2020-09-25 09:06:01,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:01,347 INFO L225 Difference]: With dead ends: 1710 [2020-09-25 09:06:01,347 INFO L226 Difference]: Without dead ends: 1708 [2020-09-25 09:06:01,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:06:01,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1708 states. [2020-09-25 09:06:01,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1708 to 1194. [2020-09-25 09:06:01,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-09-25 09:06:01,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1505 transitions. [2020-09-25 09:06:01,454 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 1505 transitions. Word has length 146 [2020-09-25 09:06:01,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:01,456 INFO L479 AbstractCegarLoop]: Abstraction has 1194 states and 1505 transitions. [2020-09-25 09:06:01,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:06:01,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 1505 transitions. [2020-09-25 09:06:01,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 09:06:01,460 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:01,461 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:01,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:06:01,461 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:01,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:01,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1962223494, now seen corresponding path program 1 times [2020-09-25 09:06:01,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:01,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857043118] [2020-09-25 09:06:01,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:01,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:01,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:01,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:02,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:03,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:03,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:03,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:03,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:06,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:06,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 09:06:06,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:06:06,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 09:06:06,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:06,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:06,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:06:06,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 09:06:06,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 09:06:06,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:06:06,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:06,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:06,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:06,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:06,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:06,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:06,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:06:06,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:06,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:06,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:06:06,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:06,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:06:06,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:06,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:06,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:06,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:06,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:06:06,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:06,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 09:06:06,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:06,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:06,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:06:06,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:06,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:06:06,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:06,802 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:06:06,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857043118] [2020-09-25 09:06:06,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:06,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:06:06,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431644973] [2020-09-25 09:06:06,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:06:06,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:06,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:06:06,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:06:06,805 INFO L87 Difference]: Start difference. First operand 1194 states and 1505 transitions. Second operand 6 states. [2020-09-25 09:06:09,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:09,686 INFO L93 Difference]: Finished difference Result 3212 states and 4292 transitions. [2020-09-25 09:06:09,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:06:09,696 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 152 [2020-09-25 09:06:09,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:09,711 INFO L225 Difference]: With dead ends: 3212 [2020-09-25 09:06:09,711 INFO L226 Difference]: Without dead ends: 2033 [2020-09-25 09:06:09,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:06:09,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2033 states. [2020-09-25 09:06:09,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2033 to 1816. [2020-09-25 09:06:09,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1816 states. [2020-09-25 09:06:09,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1816 states to 1816 states and 2423 transitions. [2020-09-25 09:06:09,787 INFO L78 Accepts]: Start accepts. Automaton has 1816 states and 2423 transitions. Word has length 152 [2020-09-25 09:06:09,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:09,787 INFO L479 AbstractCegarLoop]: Abstraction has 1816 states and 2423 transitions. [2020-09-25 09:06:09,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:06:09,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1816 states and 2423 transitions. [2020-09-25 09:06:09,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 09:06:09,791 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:09,791 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:09,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:06:09,792 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:09,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:09,792 INFO L82 PathProgramCache]: Analyzing trace with hash 936089478, now seen corresponding path program 1 times [2020-09-25 09:06:09,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:09,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527257838] [2020-09-25 09:06:09,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:09,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:09,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:09,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:11,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:11,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:12,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:13,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:13,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 09:06:13,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:06:13,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4119 [2020-09-25 09:06:13,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:13,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:13,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:06:13,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 09:06:13,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 09:06:13,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:14,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:14,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:14,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:14,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:14,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:14,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:14,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:06:14,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:14,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:14,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:14,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:14,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:06:14,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:14,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:14,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:14,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:14,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 09:06:14,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:14,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-25 09:06:14,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:14,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:14,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:14,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:06:14,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 09:06:14,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:14,413 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:06:14,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527257838] [2020-09-25 09:06:14,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:06:14,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:06:14,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337387951] [2020-09-25 09:06:14,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:06:14,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:14,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:06:14,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:06:14,418 INFO L87 Difference]: Start difference. First operand 1816 states and 2423 transitions. Second operand 7 states. [2020-09-25 09:06:16,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:16,825 INFO L93 Difference]: Finished difference Result 4951 states and 7040 transitions. [2020-09-25 09:06:16,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:06:16,826 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 171 [2020-09-25 09:06:16,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:16,847 INFO L225 Difference]: With dead ends: 4951 [2020-09-25 09:06:16,847 INFO L226 Difference]: Without dead ends: 3150 [2020-09-25 09:06:16,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:06:16,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3150 states. [2020-09-25 09:06:16,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3150 to 2614. [2020-09-25 09:06:16,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2614 states. [2020-09-25 09:06:16,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2614 states to 2614 states and 3454 transitions. [2020-09-25 09:06:16,946 INFO L78 Accepts]: Start accepts. Automaton has 2614 states and 3454 transitions. Word has length 171 [2020-09-25 09:06:16,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:16,947 INFO L479 AbstractCegarLoop]: Abstraction has 2614 states and 3454 transitions. [2020-09-25 09:06:16,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:06:16,947 INFO L276 IsEmpty]: Start isEmpty. Operand 2614 states and 3454 transitions. [2020-09-25 09:06:16,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-25 09:06:16,951 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:16,951 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:16,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:06:16,951 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:16,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:16,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1916393390, now seen corresponding path program 1 times [2020-09-25 09:06:16,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:16,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105071055] [2020-09-25 09:06:16,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:16,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:17,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:17,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:17,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:19,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:20,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:21,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:21,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 09:06:21,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:06:21,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4809 [2020-09-25 09:06:21,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:21,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:21,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:06:21,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:06:21,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-09-25 09:06:21,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:06:21,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:21,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:21,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:21,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:21,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:21,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 09:06:21,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:21,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:21,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:06:21,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:21,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:06:21,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:21,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:22,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:22,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:22,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:22,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 09:06:22,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:22,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-09-25 09:06:22,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:22,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:22,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:06:22,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:22,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 09:06:22,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:06:22,521 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:06:22,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105071055] [2020-09-25 09:06:22,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:22,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:06:22,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250136078] [2020-09-25 09:06:22,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:06:22,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:22,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:06:22,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:06:22,524 INFO L87 Difference]: Start difference. First operand 2614 states and 3454 transitions. Second operand 10 states. [2020-09-25 09:06:25,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:25,903 INFO L93 Difference]: Finished difference Result 6057 states and 8190 transitions. [2020-09-25 09:06:25,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 09:06:25,904 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 195 [2020-09-25 09:06:25,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:25,921 INFO L225 Difference]: With dead ends: 6057 [2020-09-25 09:06:25,921 INFO L226 Difference]: Without dead ends: 3430 [2020-09-25 09:06:25,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-09-25 09:06:25,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3430 states. [2020-09-25 09:06:26,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3430 to 2943. [2020-09-25 09:06:26,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2943 states. [2020-09-25 09:06:26,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2943 states to 2943 states and 3842 transitions. [2020-09-25 09:06:26,014 INFO L78 Accepts]: Start accepts. Automaton has 2943 states and 3842 transitions. Word has length 195 [2020-09-25 09:06:26,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:26,015 INFO L479 AbstractCegarLoop]: Abstraction has 2943 states and 3842 transitions. [2020-09-25 09:06:26,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:06:26,015 INFO L276 IsEmpty]: Start isEmpty. Operand 2943 states and 3842 transitions. [2020-09-25 09:06:26,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-09-25 09:06:26,022 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:26,023 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 09:06:26,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:06:26,023 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:26,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:26,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1921690121, now seen corresponding path program 1 times [2020-09-25 09:06:26,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:26,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947269121] [2020-09-25 09:06:26,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:26,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:26,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:26,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:26,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking...