/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:45:22,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:45:22,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:45:22,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:45:22,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:45:22,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:45:22,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:45:22,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:45:22,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:45:22,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:45:22,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:45:22,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:45:22,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:45:22,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:45:22,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:45:22,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:45:22,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:45:22,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:45:22,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:45:22,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:45:22,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:45:22,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:45:22,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:45:22,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:45:22,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:45:22,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:45:22,071 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:45:22,072 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:45:22,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:45:22,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:45:22,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:45:22,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:45:22,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:45:22,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:45:22,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:45:22,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:45:22,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:45:22,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:45:22,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:45:22,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:45:22,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:45:22,081 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 21:45:22,122 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:45:22,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:45:22,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:45:22,124 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:45:22,124 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:45:22,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:45:22,125 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:45:22,125 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:45:22,125 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:45:22,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:45:22,125 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:45:22,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:45:22,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:45:22,126 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:45:22,126 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:45:22,126 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:45:22,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:45:22,127 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:45:22,127 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:45:22,127 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:45:22,127 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:45:22,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:45:22,128 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:45:22,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:45:22,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:45:22,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:45:22,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:45:22,129 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:45:22,129 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:45:22,129 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:45:22,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:45:22,642 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:45:22,646 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:45:22,649 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:45:22,650 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:45:22,652 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label34.c [2020-09-24 21:45:22,755 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ad331045/08ad7effebba430b9ada81cb6f0bfe53/FLAGdd6854d88 [2020-09-24 21:45:23,453 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:45:23,454 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label34.c [2020-09-24 21:45:23,470 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ad331045/08ad7effebba430b9ada81cb6f0bfe53/FLAGdd6854d88 [2020-09-24 21:45:23,668 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ad331045/08ad7effebba430b9ada81cb6f0bfe53 [2020-09-24 21:45:23,684 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:45:23,693 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:45:23,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:45:23,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:45:23,702 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:45:23,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:45:23" (1/1) ... [2020-09-24 21:45:23,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d85ba32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:23, skipping insertion in model container [2020-09-24 21:45:23,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:45:23" (1/1) ... [2020-09-24 21:45:23,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:45:23,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:45:24,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:45:24,376 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:45:24,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:45:24,578 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:45:24,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:24 WrapperNode [2020-09-24 21:45:24,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:45:24,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:45:24,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:45:24,581 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:45:24,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:24" (1/1) ... [2020-09-24 21:45:24,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:24" (1/1) ... [2020-09-24 21:45:24,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:24" (1/1) ... [2020-09-24 21:45:24,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:24" (1/1) ... [2020-09-24 21:45:24,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:24" (1/1) ... [2020-09-24 21:45:24,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:24" (1/1) ... [2020-09-24 21:45:24,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:24" (1/1) ... [2020-09-24 21:45:24,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:45:24,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:45:24,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:45:24,720 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:45:24,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:45:24,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:45:24,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:45:24,819 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:45:24,819 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:45:24,819 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:45:24,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:45:24,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:45:24,820 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:45:24,821 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:45:24,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:45:24,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:45:26,419 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:45:26,419 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:45:26,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:45:26 BoogieIcfgContainer [2020-09-24 21:45:26,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:45:26,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:45:26,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:45:26,434 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:45:26,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:45:23" (1/3) ... [2020-09-24 21:45:26,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69fd4e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:45:26, skipping insertion in model container [2020-09-24 21:45:26,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:24" (2/3) ... [2020-09-24 21:45:26,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69fd4e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:45:26, skipping insertion in model container [2020-09-24 21:45:26,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:45:26" (3/3) ... [2020-09-24 21:45:26,442 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label34.c [2020-09-24 21:45:26,455 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:45:26,472 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:45:26,499 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:45:26,552 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:45:26,553 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:45:26,554 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:45:26,554 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:45:26,554 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:45:26,554 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:45:26,555 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:45:26,555 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:45:26,604 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 21:45:26,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-24 21:45:26,621 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:26,623 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] [2020-09-24 21:45:26,623 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:26,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:26,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1489035705, now seen corresponding path program 1 times [2020-09-24 21:45:26,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:26,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856127885] [2020-09-24 21:45:26,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:27,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:27,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:27,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:28,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:28,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 21:45:28,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:45:28,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1209 [2020-09-24 21:45:28,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:28,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:45:28,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:28,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 21:45:28,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:45:28,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:28,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:28,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:28,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:28,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:28,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 21:45:28,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:28,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:28,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:28,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:45:28,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:28,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:28,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856127885] [2020-09-24 21:45:28,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:45:28,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:45:28,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6715813] [2020-09-24 21:45:28,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:45:28,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:28,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:45:28,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:45:28,348 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 21:45:30,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:30,575 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-24 21:45:30,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:45:30,578 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-09-24 21:45:30,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:30,617 INFO L225 Difference]: With dead ends: 1160 [2020-09-24 21:45:30,618 INFO L226 Difference]: Without dead ends: 631 [2020-09-24 21:45:30,633 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 [2020-09-24 21:45:30,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-24 21:45:30,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-24 21:45:30,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-24 21:45:30,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-24 21:45:30,747 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 82 [2020-09-24 21:45:30,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:30,747 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-24 21:45:30,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:45:30,748 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-24 21:45:30,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-24 21:45:30,758 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:30,759 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:30,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:45:30,759 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:30,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:30,760 INFO L82 PathProgramCache]: Analyzing trace with hash -942957376, now seen corresponding path program 1 times [2020-09-24 21:45:30,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:30,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921607956] [2020-09-24 21:45:30,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:30,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:31,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:31,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:32,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:32,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:33,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:35,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:35,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-24 21:45:35,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:45:35,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-24 21:45:35,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:35,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:45:35,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:35,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 21:45:35,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:35,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:35,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:35,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:35,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:35,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:35,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 21:45:35,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:35,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:35,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:35,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:45:35,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:36,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:36,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:36,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:36,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:36,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 21:45:36,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:36,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-24 21:45:36,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:36,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:36,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:36,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:45:36,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:36,364 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:36,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921607956] [2020-09-24 21:45:36,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:45:36,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:45:36,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135160008] [2020-09-24 21:45:36,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:45:36,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:36,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:45:36,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:45:36,370 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 7 states. [2020-09-24 21:45:38,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:38,348 INFO L93 Difference]: Finished difference Result 1330 states and 1655 transitions. [2020-09-24 21:45:38,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 21:45:38,351 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 165 [2020-09-24 21:45:38,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:38,356 INFO L225 Difference]: With dead ends: 1330 [2020-09-24 21:45:38,356 INFO L226 Difference]: Without dead ends: 769 [2020-09-24 21:45:38,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:45:38,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2020-09-24 21:45:38,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 731. [2020-09-24 21:45:38,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2020-09-24 21:45:38,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 902 transitions. [2020-09-24 21:45:38,396 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 902 transitions. Word has length 165 [2020-09-24 21:45:38,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:38,397 INFO L479 AbstractCegarLoop]: Abstraction has 731 states and 902 transitions. [2020-09-24 21:45:38,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:45:38,398 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 902 transitions. [2020-09-24 21:45:38,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-24 21:45:38,407 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:38,407 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:38,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:45:38,407 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:38,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:38,408 INFO L82 PathProgramCache]: Analyzing trace with hash 782475013, now seen corresponding path program 1 times [2020-09-24 21:45:38,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:38,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895119592] [2020-09-24 21:45:38,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:38,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:38,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:38,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:39,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:39,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:39,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:41,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:41,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-24 21:45:41,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:45:41,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2617 [2020-09-24 21:45:41,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:41,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:45:41,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:41,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-09-24 21:45:41,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:41,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:41,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:41,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:41,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:41,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:41,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:41,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 21:45:41,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:41,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:45:41,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:41,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:45:41,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:41,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:41,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:41,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:41,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:41,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:41,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 21:45:41,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:45:41,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-09-24 21:45:41,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:41,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:45:41,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:41,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:45:41,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:41,939 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 35 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:41,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895119592] [2020-09-24 21:45:41,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:41,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:45:41,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311736869] [2020-09-24 21:45:41,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:45:41,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:41,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:45:41,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:45:41,944 INFO L87 Difference]: Start difference. First operand 731 states and 902 transitions. Second operand 9 states. [2020-09-24 21:45:44,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:44,815 INFO L93 Difference]: Finished difference Result 1797 states and 2298 transitions. [2020-09-24 21:45:44,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 21:45:44,816 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 165 [2020-09-24 21:45:44,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:44,824 INFO L225 Difference]: With dead ends: 1797 [2020-09-24 21:45:44,824 INFO L226 Difference]: Without dead ends: 1081 [2020-09-24 21:45:44,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:45:44,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2020-09-24 21:45:44,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 886. [2020-09-24 21:45:44,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 886 states. [2020-09-24 21:45:44,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1117 transitions. [2020-09-24 21:45:44,887 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1117 transitions. Word has length 165 [2020-09-24 21:45:44,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:44,890 INFO L479 AbstractCegarLoop]: Abstraction has 886 states and 1117 transitions. [2020-09-24 21:45:44,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:45:44,890 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1117 transitions. [2020-09-24 21:45:44,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-09-24 21:45:44,903 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:44,915 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 21:45:44,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:45:44,916 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:44,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:44,921 INFO L82 PathProgramCache]: Analyzing trace with hash 891273983, now seen corresponding path program 1 times [2020-09-24 21:45:44,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:44,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178588184] [2020-09-24 21:45:44,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:45,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:45,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:45,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:45,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:49,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:50,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:50,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-09-24 21:45:50,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:45:50,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-24 21:45:50,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:50,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:45:50,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:45:50,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-24 21:45:50,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:50,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:50,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:50,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:50,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:50,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:50,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 21:45:50,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:50,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:50,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:50,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:45:50,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:50,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:50,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:50,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:50,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:50,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-24 21:45:50,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:50,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-09-24 21:45:50,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:50,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:50,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:50,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-24 21:45:50,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:50,576 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:50,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178588184] [2020-09-24 21:45:50,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:45:50,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:45:50,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809600002] [2020-09-24 21:45:50,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:45:50,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:50,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:45:50,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:45:50,579 INFO L87 Difference]: Start difference. First operand 886 states and 1117 transitions. Second operand 7 states. [2020-09-24 21:45:52,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:52,732 INFO L93 Difference]: Finished difference Result 1967 states and 2642 transitions. [2020-09-24 21:45:52,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 21:45:52,734 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2020-09-24 21:45:52,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:52,748 INFO L225 Difference]: With dead ends: 1967 [2020-09-24 21:45:52,749 INFO L226 Difference]: Without dead ends: 1246 [2020-09-24 21:45:52,753 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 [2020-09-24 21:45:52,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2020-09-24 21:45:52,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1210. [2020-09-24 21:45:52,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-09-24 21:45:52,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1564 transitions. [2020-09-24 21:45:52,812 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1564 transitions. Word has length 214 [2020-09-24 21:45:52,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:52,814 INFO L479 AbstractCegarLoop]: Abstraction has 1210 states and 1564 transitions. [2020-09-24 21:45:52,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:45:52,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1564 transitions. [2020-09-24 21:45:52,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-09-24 21:45:52,822 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:52,822 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:45:52,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:45:52,823 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:52,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:52,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1770967009, now seen corresponding path program 1 times [2020-09-24 21:45:52,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:52,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377675718] [2020-09-24 21:45:52,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:52,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:53,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:53,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:53,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:54,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:54,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:55,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:55,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:55,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:56,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:57,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:57,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-09-24 21:45:57,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 21:45:57,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 21:45:57,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:57,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:45:57,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:57,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 21:45:57,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:58,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:58,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:58,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:58,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:58,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:58,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:58,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 21:45:58,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:58,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:58,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:58,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:45:58,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:58,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:58,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:58,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:58,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:45:58,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:58,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-09-24 21:45:58,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:58,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:45:58,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:58,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 21:45:58,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:58,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 21:45:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:58,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:58,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:58,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:58,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 21:45:58,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:45:58,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-09-24 21:45:58,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:58,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:58,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:58,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 21:45:58,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:59,474 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 158 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:45:59,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377675718] [2020-09-24 21:45:59,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:59,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 21:45:59,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043911919] [2020-09-24 21:45:59,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 21:45:59,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:59,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 21:45:59,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:45:59,482 INFO L87 Difference]: Start difference. First operand 1210 states and 1564 transitions. Second operand 13 states. [2020-09-24 21:45:59,825 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-09-24 21:46:04,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:04,428 INFO L93 Difference]: Finished difference Result 3416 states and 4861 transitions. [2020-09-24 21:46:04,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 21:46:04,429 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 263 [2020-09-24 21:46:04,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:04,453 INFO L225 Difference]: With dead ends: 3416 [2020-09-24 21:46:04,453 INFO L226 Difference]: Without dead ends: 2328 [2020-09-24 21:46:04,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=198, Invalid=672, Unknown=0, NotChecked=0, Total=870 [2020-09-24 21:46:04,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2328 states. [2020-09-24 21:46:04,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2328 to 1912. [2020-09-24 21:46:04,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1912 states. [2020-09-24 21:46:04,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1912 states to 1912 states and 2589 transitions. [2020-09-24 21:46:04,558 INFO L78 Accepts]: Start accepts. Automaton has 1912 states and 2589 transitions. Word has length 263 [2020-09-24 21:46:04,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:04,559 INFO L479 AbstractCegarLoop]: Abstraction has 1912 states and 2589 transitions. [2020-09-24 21:46:04,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 21:46:04,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1912 states and 2589 transitions. [2020-09-24 21:46:04,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-09-24 21:46:04,565 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:04,566 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:46:04,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:46:04,566 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:04,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:04,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1897097815, now seen corresponding path program 1 times [2020-09-24 21:46:04,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:04,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827319850] [2020-09-24 21:46:04,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:04,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:04,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:04,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:04,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:05,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:06,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:06,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:07,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking...