/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_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:44:48,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:44:48,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:44:49,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:44:49,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:44:49,037 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:44:49,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:44:49,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:44:49,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:44:49,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:44:49,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:44:49,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:44:49,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:44:49,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:44:49,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:44:49,058 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:44:49,059 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:44:49,061 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:44:49,062 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:44:49,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:44:49,074 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:44:49,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:44:49,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:44:49,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:44:49,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:44:49,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:44:49,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:44:49,099 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:44:49,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:44:49,101 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:44:49,101 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:44:49,102 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:44:49,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:44:49,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:44:49,106 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:44:49,106 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:44:49,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:44:49,108 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:44:49,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:44:49,109 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:44:49,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:44:49,112 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 21:44:49,155 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:44:49,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:44:49,158 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:44:49,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:44:49,159 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:44:49,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:44:49,159 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:44:49,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:44:49,160 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:44:49,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:44:49,161 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:44:49,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:44:49,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:44:49,162 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:44:49,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:44:49,162 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:44:49,163 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:44:49,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:44:49,163 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:44:49,163 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:44:49,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:44:49,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:44:49,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:44:49,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:44:49,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:44:49,164 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:44:49,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:44:49,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:44:49,165 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:44:49,165 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 21:44:49,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:44:49,654 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:44:49,659 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:44:49,662 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:44:49,663 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:44:49,664 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label20.c [2020-09-24 21:44:49,765 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f636af31/53ca2695e9f2465c8c8f190d1ed52393/FLAG794ecc5e7 [2020-09-24 21:44:50,421 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:44:50,422 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label20.c [2020-09-24 21:44:50,438 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f636af31/53ca2695e9f2465c8c8f190d1ed52393/FLAG794ecc5e7 [2020-09-24 21:44:50,641 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f636af31/53ca2695e9f2465c8c8f190d1ed52393 [2020-09-24 21:44:50,658 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:44:50,664 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:44:50,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:44:50,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:44:50,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:44:50,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:44:50" (1/1) ... [2020-09-24 21:44:50,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad15a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:50, skipping insertion in model container [2020-09-24 21:44:50,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:44:50" (1/1) ... [2020-09-24 21:44:50,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:44:50,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:44:51,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:44:51,241 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:44:51,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:44:51,496 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:44:51,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:51 WrapperNode [2020-09-24 21:44:51,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:44:51,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:44:51,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:44:51,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:44:51,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:51" (1/1) ... [2020-09-24 21:44:51,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:51" (1/1) ... [2020-09-24 21:44:51,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:51" (1/1) ... [2020-09-24 21:44:51,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:51" (1/1) ... [2020-09-24 21:44:51,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:51" (1/1) ... [2020-09-24 21:44:51,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:51" (1/1) ... [2020-09-24 21:44:51,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:51" (1/1) ... [2020-09-24 21:44:51,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:44:51,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:44:51,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:44:51,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:44:51,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:51" (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 21:44:51,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:44:51,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:44:51,719 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:44:51,719 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:44:51,720 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:44:51,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:44:51,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:44:51,720 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:44:51,721 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:44:51,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:44:51,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:44:53,258 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:44:53,258 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:44:53,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:44:53 BoogieIcfgContainer [2020-09-24 21:44:53,268 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:44:53,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:44:53,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:44:53,273 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:44:53,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:44:50" (1/3) ... [2020-09-24 21:44:53,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:44:53, skipping insertion in model container [2020-09-24 21:44:53,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:51" (2/3) ... [2020-09-24 21:44:53,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:44:53, skipping insertion in model container [2020-09-24 21:44:53,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:44:53" (3/3) ... [2020-09-24 21:44:53,278 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label20.c [2020-09-24 21:44:53,291 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:44:53,306 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:44:53,330 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:44:53,365 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:44:53,366 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:44:53,366 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:44:53,366 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:44:53,366 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:44:53,366 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:44:53,366 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:44:53,367 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:44:53,400 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 21:44:53,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 21:44:53,411 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:53,412 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] [2020-09-24 21:44:53,413 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:53,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:53,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1331013031, now seen corresponding path program 1 times [2020-09-24 21:44:53,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:53,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939204010] [2020-09-24 21:44:53,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:53,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:53,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:54,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:54,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 21:44:54,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:54,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 514 [2020-09-24 21:44:54,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:54,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:44:54,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:44:54,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-24 21:44:54,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:44:54,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:54,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:54,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:54,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:54,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:54,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:54,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 21:44:54,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:54,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:44:54,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:54,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:44:54,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:54,369 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 21:44:54,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939204010] [2020-09-24 21:44:54,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:44:54,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:44:54,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918324036] [2020-09-24 21:44:54,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:44:54,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:54,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:44:54,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:44:54,406 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 21:44:56,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:44:56,497 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-24 21:44:56,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:44:56,499 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-24 21:44:56,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:44:56,524 INFO L225 Difference]: With dead ends: 1069 [2020-09-24 21:44:56,524 INFO L226 Difference]: Without dead ends: 555 [2020-09-24 21:44:56,536 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 21:44:56,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-24 21:44:56,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-24 21:44:56,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-24 21:44:56,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-24 21:44:56,652 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 47 [2020-09-24 21:44:56,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:44:56,653 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-24 21:44:56,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:44:56,654 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-24 21:44:56,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-24 21:44:56,660 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:56,661 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:56,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:44:56,661 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:56,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:56,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1207738435, now seen corresponding path program 1 times [2020-09-24 21:44:56,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:56,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875290525] [2020-09-24 21:44:56,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:56,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:56,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:57,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:57,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:57,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:58,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:58,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-24 21:44:58,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:44:58,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1792 [2020-09-24 21:44:58,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:58,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:44:58,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:44:58,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 21:44:58,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:58,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:58,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:58,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:58,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:58,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:58,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:58,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 21:44:58,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:58,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:44:58,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:58,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:44:58,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:44:58,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:44:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:58,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:58,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:58,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 21:44:58,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:58,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-24 21:44:58,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:58,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:44:58,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:44:58,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 21:44:58,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:59,031 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:44:59,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875290525] [2020-09-24 21:44:59,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:44:59,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:44:59,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589326295] [2020-09-24 21:44:59,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:44:59,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:59,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:44:59,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:44:59,037 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 7 states. [2020-09-24 21:45:01,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:01,255 INFO L93 Difference]: Finished difference Result 1258 states and 1571 transitions. [2020-09-24 21:45:01,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 21:45:01,257 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2020-09-24 21:45:01,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:01,262 INFO L225 Difference]: With dead ends: 1258 [2020-09-24 21:45:01,263 INFO L226 Difference]: Without dead ends: 730 [2020-09-24 21:45:01,266 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 21:45:01,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2020-09-24 21:45:01,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 699. [2020-09-24 21:45:01,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2020-09-24 21:45:01,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 855 transitions. [2020-09-24 21:45:01,307 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 855 transitions. Word has length 127 [2020-09-24 21:45:01,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:01,308 INFO L479 AbstractCegarLoop]: Abstraction has 699 states and 855 transitions. [2020-09-24 21:45:01,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:45:01,308 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 855 transitions. [2020-09-24 21:45:01,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-24 21:45:01,311 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:01,312 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:01,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:45:01,312 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:01,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:01,312 INFO L82 PathProgramCache]: Analyzing trace with hash 843318586, now seen corresponding path program 1 times [2020-09-24 21:45:01,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:01,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636234948] [2020-09-24 21:45:01,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:01,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:01,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:01,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:01,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:01,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:02,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:04,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:04,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:05,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:06,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:06,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-24 21:45:06,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:45:06,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-24 21:45:06,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:06,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:45:06,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:06,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 21:45:06,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:06,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:06,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:06,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:06,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:06,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:06,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:06,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 21:45:06,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:06,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:06,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:06,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:45:06,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:06,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:06,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:06,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:06,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:45:06,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:06,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-09-24 21:45:06,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:06,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:45:06,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:06,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 21:45:06,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:07,085 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:07,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636234948] [2020-09-24 21:45:07,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:07,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 21:45:07,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552578524] [2020-09-24 21:45:07,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 21:45:07,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:07,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 21:45:07,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:45:07,090 INFO L87 Difference]: Start difference. First operand 699 states and 855 transitions. Second operand 12 states. [2020-09-24 21:45:11,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:11,146 INFO L93 Difference]: Finished difference Result 2051 states and 2725 transitions. [2020-09-24 21:45:11,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 21:45:11,147 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 136 [2020-09-24 21:45:11,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:11,168 INFO L225 Difference]: With dead ends: 2051 [2020-09-24 21:45:11,168 INFO L226 Difference]: Without dead ends: 1474 [2020-09-24 21:45:11,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2020-09-24 21:45:11,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2020-09-24 21:45:11,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1093. [2020-09-24 21:45:11,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1093 states. [2020-09-24 21:45:11,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1396 transitions. [2020-09-24 21:45:11,262 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1396 transitions. Word has length 136 [2020-09-24 21:45:11,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:11,263 INFO L479 AbstractCegarLoop]: Abstraction has 1093 states and 1396 transitions. [2020-09-24 21:45:11,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 21:45:11,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1396 transitions. [2020-09-24 21:45:11,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-24 21:45:11,275 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:11,275 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:11,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:45:11,276 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:11,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:11,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1301933938, now seen corresponding path program 1 times [2020-09-24 21:45:11,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:11,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259621521] [2020-09-24 21:45:11,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:11,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:11,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:11,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:11,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:12,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:13,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:13,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-24 21:45:13,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:45:13,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2115 [2020-09-24 21:45:13,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:13,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:45:13,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:13,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-24 21:45:13,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:45:13,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:13,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:13,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:13,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:13,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:13,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 21:45:13,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:13,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:13,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:13,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:45:13,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:13,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:13,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:13,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:13,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:13,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-24 21:45:13,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:13,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-24 21:45:13,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:13,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:45:13,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:13,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 21:45:13,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:13,880 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:13,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259621521] [2020-09-24 21:45:13,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:13,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 21:45:13,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246531076] [2020-09-24 21:45:13,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:45:13,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:13,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:45:13,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:45:13,883 INFO L87 Difference]: Start difference. First operand 1093 states and 1396 transitions. Second operand 8 states. [2020-09-24 21:45:17,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:17,265 INFO L93 Difference]: Finished difference Result 2487 states and 3372 transitions. [2020-09-24 21:45:17,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 21:45:17,266 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 138 [2020-09-24 21:45:17,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:17,281 INFO L225 Difference]: With dead ends: 2487 [2020-09-24 21:45:17,281 INFO L226 Difference]: Without dead ends: 1559 [2020-09-24 21:45:17,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:45:17,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2020-09-24 21:45:17,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 1431. [2020-09-24 21:45:17,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1431 states. [2020-09-24 21:45:17,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 1808 transitions. [2020-09-24 21:45:17,351 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 1808 transitions. Word has length 138 [2020-09-24 21:45:17,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:17,352 INFO L479 AbstractCegarLoop]: Abstraction has 1431 states and 1808 transitions. [2020-09-24 21:45:17,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:45:17,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 1808 transitions. [2020-09-24 21:45:17,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-24 21:45:17,355 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:17,355 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:17,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:45:17,357 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:17,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:17,358 INFO L82 PathProgramCache]: Analyzing trace with hash 342195782, now seen corresponding path program 1 times [2020-09-24 21:45:17,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:17,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643944406] [2020-09-24 21:45:17,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:17,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:17,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:17,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:18,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:18,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:21,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:21,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-24 21:45:21,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:45:21,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3986 [2020-09-24 21:45:21,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:21,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:45:21,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:21,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-24 21:45:21,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:21,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:21,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:21,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:21,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:21,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:21,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 21:45:21,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:21,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:21,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:21,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:45:21,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:21,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:21,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:21,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:21,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:22,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:22,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 21:45:22,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:45:22,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-09-24 21:45:22,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:22,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:45:22,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:22,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-24 21:45:22,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:22,379 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:22,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643944406] [2020-09-24 21:45:22,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:22,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 21:45:22,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844238637] [2020-09-24 21:45:22,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 21:45:22,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:22,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 21:45:22,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:45:22,383 INFO L87 Difference]: Start difference. First operand 1431 states and 1808 transitions. Second operand 12 states. [2020-09-24 21:45:25,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:25,128 INFO L93 Difference]: Finished difference Result 2458 states and 3215 transitions. [2020-09-24 21:45:25,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 21:45:25,129 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 155 [2020-09-24 21:45:25,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:25,138 INFO L225 Difference]: With dead ends: 2458 [2020-09-24 21:45:25,138 INFO L226 Difference]: Without dead ends: 1500 [2020-09-24 21:45:25,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-09-24 21:45:25,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2020-09-24 21:45:25,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1446. [2020-09-24 21:45:25,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1446 states. [2020-09-24 21:45:25,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 1826 transitions. [2020-09-24 21:45:25,190 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 1826 transitions. Word has length 155 [2020-09-24 21:45:25,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:25,191 INFO L479 AbstractCegarLoop]: Abstraction has 1446 states and 1826 transitions. [2020-09-24 21:45:25,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 21:45:25,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 1826 transitions. [2020-09-24 21:45:25,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-24 21:45:25,194 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:25,194 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:25,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:45:25,195 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:25,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:25,195 INFO L82 PathProgramCache]: Analyzing trace with hash 6444598, now seen corresponding path program 1 times [2020-09-24 21:45:25,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:25,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518586825] [2020-09-24 21:45:25,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:25,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:25,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:25,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:26,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:26,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:28,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:28,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-24 21:45:28,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:45:28,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3611 [2020-09-24 21:45:28,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:28,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:45:28,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 21:45:28,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-24 21:45:28,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:28,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:28,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:28,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:28,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:28,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:28,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 21:45:28,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:28,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:28,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:28,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:45:28,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:28,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:28,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:29,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:29,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:29,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-24 21:45:29,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:29,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-09-24 21:45:29,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:29,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:29,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:29,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-24 21:45:29,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:29,308 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:29,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518586825] [2020-09-24 21:45:29,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:45:29,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:45:29,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911319121] [2020-09-24 21:45:29,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:45:29,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:29,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:45:29,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:45:29,311 INFO L87 Difference]: Start difference. First operand 1446 states and 1826 transitions. Second operand 7 states. [2020-09-24 21:45:31,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:31,340 INFO L93 Difference]: Finished difference Result 3130 states and 4274 transitions. [2020-09-24 21:45:31,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 21:45:31,341 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 169 [2020-09-24 21:45:31,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:31,352 INFO L225 Difference]: With dead ends: 3130 [2020-09-24 21:45:31,352 INFO L226 Difference]: Without dead ends: 1855 [2020-09-24 21:45:31,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:45:31,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1855 states. [2020-09-24 21:45:31,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1855 to 1753. [2020-09-24 21:45:31,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1753 states. [2020-09-24 21:45:31,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1753 states to 1753 states and 2132 transitions. [2020-09-24 21:45:31,420 INFO L78 Accepts]: Start accepts. Automaton has 1753 states and 2132 transitions. Word has length 169 [2020-09-24 21:45:31,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:31,420 INFO L479 AbstractCegarLoop]: Abstraction has 1753 states and 2132 transitions. [2020-09-24 21:45:31,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:45:31,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1753 states and 2132 transitions. [2020-09-24 21:45:31,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-09-24 21:45:31,424 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:31,424 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 21:45:31,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 21:45:31,425 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:31,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:31,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1483242834, now seen corresponding path program 1 times [2020-09-24 21:45:31,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:31,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340647512] [2020-09-24 21:45:31,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:31,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:31,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:31,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:32,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:32,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:34,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:34,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:34,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:35,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:35,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-09-24 21:45:35,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:45:35,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3803 [2020-09-24 21:45:35,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:35,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:45:35,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:35,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-09-24 21:45:35,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:35,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:35,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:35,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:35,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:35,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:35,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 21:45:35,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:35,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:35,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:35,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:45:35,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:35,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:35,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:35,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:35,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:45:35,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:35,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-24 21:45:35,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:35,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:45:35,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:35,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:45:35,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:35,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:45:35,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:35,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:35,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:35,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 21:45:35,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:35,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-24 21:45:35,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:35,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:35,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:35,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 21:45:35,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:35,960 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 130 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:45:35,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340647512] [2020-09-24 21:45:35,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:35,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 21:45:35,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033104832] [2020-09-24 21:45:35,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 21:45:35,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:35,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 21:45:35,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:45:35,963 INFO L87 Difference]: Start difference. First operand 1753 states and 2132 transitions. Second operand 10 states.