/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:07:03,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:07:03,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:07:03,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:07:03,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:07:03,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:07:03,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:07:03,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:07:03,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:07:03,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:07:03,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:07:03,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:07:03,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:07:03,377 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:07:03,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:07:03,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:07:03,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:07:03,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:07:03,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:07:03,391 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:07:03,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:07:03,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:07:03,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:07:03,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:07:03,403 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:07:03,403 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:07:03,403 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:07:03,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:07:03,408 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:07:03,410 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:07:03,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:07:03,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:07:03,411 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:07:03,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:07:03,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:07:03,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:07:03,414 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:07:03,415 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:07:03,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:07:03,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:07:03,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:07:03,418 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 09:07:03,465 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:07:03,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:07:03,467 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:07:03,468 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:07:03,468 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:07:03,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:07:03,468 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:07:03,469 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:07:03,469 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:07:03,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:07:03,470 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:07:03,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:07:03,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:07:03,471 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:07:03,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:07:03,471 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:07:03,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:07:03,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:07:03,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:07:03,472 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:07:03,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:07:03,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:07:03,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:07:03,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:07:03,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:07:03,473 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:07:03,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:07:03,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:07:03,474 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:07:03,474 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:07:03,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:07:03,913 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:07:03,918 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:07:03,919 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:07:03,920 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:07:03,921 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label38.c [2020-09-25 09:07:03,994 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a39075f7/d5537dce0f25405987f3cfaf9819c031/FLAG20f579293 [2020-09-25 09:07:04,661 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:07:04,662 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label38.c [2020-09-25 09:07:04,686 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a39075f7/d5537dce0f25405987f3cfaf9819c031/FLAG20f579293 [2020-09-25 09:07:04,831 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a39075f7/d5537dce0f25405987f3cfaf9819c031 [2020-09-25 09:07:04,845 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:07:04,852 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:07:04,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:07:04,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:07:04,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:07:04,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:07:04" (1/1) ... [2020-09-25 09:07:04,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f58caab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:07:04, skipping insertion in model container [2020-09-25 09:07:04,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:07:04" (1/1) ... [2020-09-25 09:07:04,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:07:04,932 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:07:05,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:07:05,456 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:07:05,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:07:05,729 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:07:05,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:07:05 WrapperNode [2020-09-25 09:07:05,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:07:05,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:07:05,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:07:05,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:07:05,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:07:05" (1/1) ... [2020-09-25 09:07:05,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:07:05" (1/1) ... [2020-09-25 09:07:05,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:07:05" (1/1) ... [2020-09-25 09:07:05,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:07:05" (1/1) ... [2020-09-25 09:07:05,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:07:05" (1/1) ... [2020-09-25 09:07:05,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:07:05" (1/1) ... [2020-09-25 09:07:05,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:07:05" (1/1) ... [2020-09-25 09:07:05,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:07:05,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:07:05,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:07:05,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:07:05,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:07:05" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:07:05,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:07:05,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:07:05,990 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:07:05,990 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:07:05,990 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:07:05,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:07:05,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:07:05,991 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:07:05,991 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:07:05,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:07:05,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:07:07,582 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:07:07,582 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:07:07,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:07:07 BoogieIcfgContainer [2020-09-25 09:07:07,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:07:07,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:07:07,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:07:07,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:07:07,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:07:04" (1/3) ... [2020-09-25 09:07:07,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@750a0d14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:07:07, skipping insertion in model container [2020-09-25 09:07:07,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:07:05" (2/3) ... [2020-09-25 09:07:07,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@750a0d14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:07:07, skipping insertion in model container [2020-09-25 09:07:07,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:07:07" (3/3) ... [2020-09-25 09:07:07,602 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label38.c [2020-09-25 09:07:07,613 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:07:07,624 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:07:07,647 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:07:07,683 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:07:07,683 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:07:07,683 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:07:07,683 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:07:07,684 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:07:07,684 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:07:07,684 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:07:07,684 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:07:07,719 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 09:07:07,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 09:07:07,730 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:07,732 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] [2020-09-25 09:07:07,732 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:07,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:07,741 INFO L82 PathProgramCache]: Analyzing trace with hash -496136462, now seen corresponding path program 1 times [2020-09-25 09:07:07,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:07,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757452908] [2020-09-25 09:07:07,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:08,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:08,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:08,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:08,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:08,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 09:07:08,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:07:08,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 953 [2020-09-25 09:07:08,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:08,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:08,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:07:08,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:07:08,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 09:07:08,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:07:09,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:09,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:09,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:09,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:07:09,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:09,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 09:07:09,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:09,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:09,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:07:09,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:09,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:07:09,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:09,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:07:09,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757452908] [2020-09-25 09:07:09,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:07:09,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:07:09,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801762210] [2020-09-25 09:07:09,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:07:09,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:09,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:07:09,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:07:09,114 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 5 states. [2020-09-25 09:07:13,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:13,143 INFO L93 Difference]: Finished difference Result 1991 states and 2714 transitions. [2020-09-25 09:07:13,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:07:13,146 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-09-25 09:07:13,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:13,177 INFO L225 Difference]: With dead ends: 1991 [2020-09-25 09:07:13,178 INFO L226 Difference]: Without dead ends: 1250 [2020-09-25 09:07:13,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:07:13,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2020-09-25 09:07:13,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 997. [2020-09-25 09:07:13,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-09-25 09:07:13,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1236 transitions. [2020-09-25 09:07:13,321 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1236 transitions. Word has length 69 [2020-09-25 09:07:13,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:13,322 INFO L479 AbstractCegarLoop]: Abstraction has 997 states and 1236 transitions. [2020-09-25 09:07:13,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:07:13,322 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1236 transitions. [2020-09-25 09:07:13,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 09:07:13,332 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:13,333 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:07:13,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:07:13,333 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:13,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:13,334 INFO L82 PathProgramCache]: Analyzing trace with hash -112077510, now seen corresponding path program 1 times [2020-09-25 09:07:13,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:13,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929620077] [2020-09-25 09:07:13,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:13,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:13,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:14,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:14,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:14,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:15,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:15,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:17,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:17,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 09:07:17,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:07:17,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4225 [2020-09-25 09:07:17,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:17,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:17,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:07:17,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 09:07:17,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 09:07:17,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:17,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:17,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:17,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:17,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:17,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:07:17,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:17,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:07:17,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:17,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:17,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:07:17,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:17,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:07:17,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:17,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:07:17,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:17,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:17,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:17,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:17,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 09:07:17,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:07:17,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-09-25 09:07:17,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:17,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:17,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:17,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:07:17,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 09:07:17,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:18,136 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:07:18,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929620077] [2020-09-25 09:07:18,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:07:18,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:07:18,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049457712] [2020-09-25 09:07:18,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:07:18,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:18,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:07:18,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:07:18,141 INFO L87 Difference]: Start difference. First operand 997 states and 1236 transitions. Second operand 6 states. [2020-09-25 09:07:20,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:20,785 INFO L93 Difference]: Finished difference Result 1634 states and 2163 transitions. [2020-09-25 09:07:20,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:07:20,786 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2020-09-25 09:07:20,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:20,798 INFO L225 Difference]: With dead ends: 1634 [2020-09-25 09:07:20,798 INFO L226 Difference]: Without dead ends: 1632 [2020-09-25 09:07:20,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:07:20,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2020-09-25 09:07:20,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1190. [2020-09-25 09:07:20,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1190 states. [2020-09-25 09:07:20,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1552 transitions. [2020-09-25 09:07:20,853 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1552 transitions. Word has length 156 [2020-09-25 09:07:20,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:20,855 INFO L479 AbstractCegarLoop]: Abstraction has 1190 states and 1552 transitions. [2020-09-25 09:07:20,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:07:20,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1552 transitions. [2020-09-25 09:07:20,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 09:07:20,863 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:20,863 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:07:20,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:07:20,864 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:20,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:20,864 INFO L82 PathProgramCache]: Analyzing trace with hash 744562258, now seen corresponding path program 1 times [2020-09-25 09:07:20,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:20,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262694235] [2020-09-25 09:07:20,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:20,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:21,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:21,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:22,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:22,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:23,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:23,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:25,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:25,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 09:07:25,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:07:25,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 09:07:25,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:25,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:25,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:07:25,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 09:07:25,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-25 09:07:25,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:07:25,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:25,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:26,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:26,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:07:26,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:26,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:07:26,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:26,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:26,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:07:26,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:26,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:07:26,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:26,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:07:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:26,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:26,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:26,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 09:07:26,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:26,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-25 09:07:26,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:26,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:26,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:26,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:07:26,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 09:07:26,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:26,301 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:07:26,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262694235] [2020-09-25 09:07:26,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:07:26,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 09:07:26,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47879331] [2020-09-25 09:07:26,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:07:26,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:26,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:07:26,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:07:26,305 INFO L87 Difference]: Start difference. First operand 1190 states and 1552 transitions. Second operand 8 states. [2020-09-25 09:07:29,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:29,506 INFO L93 Difference]: Finished difference Result 3022 states and 4069 transitions. [2020-09-25 09:07:29,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:07:29,508 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 165 [2020-09-25 09:07:29,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:29,521 INFO L225 Difference]: With dead ends: 3022 [2020-09-25 09:07:29,521 INFO L226 Difference]: Without dead ends: 1847 [2020-09-25 09:07:29,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-25 09:07:29,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1847 states. [2020-09-25 09:07:29,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1847 to 1773. [2020-09-25 09:07:29,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1773 states. [2020-09-25 09:07:29,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1773 states to 1773 states and 2245 transitions. [2020-09-25 09:07:29,592 INFO L78 Accepts]: Start accepts. Automaton has 1773 states and 2245 transitions. Word has length 165 [2020-09-25 09:07:29,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:29,594 INFO L479 AbstractCegarLoop]: Abstraction has 1773 states and 2245 transitions. [2020-09-25 09:07:29,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:07:29,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1773 states and 2245 transitions. [2020-09-25 09:07:29,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-09-25 09:07:29,603 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:29,603 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, 2, 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] [2020-09-25 09:07:29,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:07:29,604 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:29,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:29,604 INFO L82 PathProgramCache]: Analyzing trace with hash 107700592, now seen corresponding path program 1 times [2020-09-25 09:07:29,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:29,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414643166] [2020-09-25 09:07:29,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:29,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:29,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:29,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:30,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:30,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:30,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:31,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:32,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:33,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:34,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:34,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-09-25 09:07:34,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 09:07:34,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 09:07:34,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:34,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:34,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 09:07:34,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 09:07:34,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-09-25 09:07:34,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:34,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:34,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:34,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:34,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:07:34,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:34,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 09:07:34,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:34,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:34,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:07:34,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:34,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:07:34,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:34,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:07:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:34,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:34,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:35,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:35,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 09:07:35,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:07:35,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-25 09:07:35,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:35,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:35,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:07:35,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:07:35,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 09:07:35,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 09:07:35,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-09-25 09:07:35,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:35,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:35,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:35,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 09:07:35,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:35,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-25 09:07:35,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:35,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:35,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:35,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:07:35,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 09:07:35,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:35,499 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 181 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:07:35,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414643166] [2020-09-25 09:07:35,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:07:35,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:07:35,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828506928] [2020-09-25 09:07:35,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:07:35,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:35,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:07:35,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:07:35,503 INFO L87 Difference]: Start difference. First operand 1773 states and 2245 transitions. Second operand 10 states. [2020-09-25 09:07:40,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:40,580 INFO L93 Difference]: Finished difference Result 3935 states and 5022 transitions. [2020-09-25 09:07:40,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 09:07:40,581 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 245 [2020-09-25 09:07:40,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:40,594 INFO L225 Difference]: With dead ends: 3935 [2020-09-25 09:07:40,594 INFO L226 Difference]: Without dead ends: 2177 [2020-09-25 09:07:40,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2020-09-25 09:07:40,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2177 states. [2020-09-25 09:07:40,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2177 to 1970. [2020-09-25 09:07:40,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1970 states. [2020-09-25 09:07:40,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1970 states to 1970 states and 2444 transitions. [2020-09-25 09:07:40,654 INFO L78 Accepts]: Start accepts. Automaton has 1970 states and 2444 transitions. Word has length 245 [2020-09-25 09:07:40,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:40,654 INFO L479 AbstractCegarLoop]: Abstraction has 1970 states and 2444 transitions. [2020-09-25 09:07:40,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:07:40,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1970 states and 2444 transitions. [2020-09-25 09:07:40,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-09-25 09:07:40,659 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:40,659 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 09:07:40,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:07:40,660 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:40,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:40,660 INFO L82 PathProgramCache]: Analyzing trace with hash 371635424, now seen corresponding path program 1 times [2020-09-25 09:07:40,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:40,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898826849] [2020-09-25 09:07:40,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:40,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:40,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:40,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:41,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:41,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:41,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:45,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:45,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-09-25 09:07:45,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:07:45,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-09-25 09:07:45,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:45,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:45,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:07:45,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 09:07:45,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 215 [2020-09-25 09:07:45,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:45,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:45,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:45,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:45,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:07:45,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:45,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 09:07:45,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:45,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:45,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:07:45,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:45,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:07:45,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:45,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:07:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:45,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:46,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:46,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:46,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 09:07:46,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:07:46,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-09-25 09:07:46,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:46,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:46,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:46,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:07:46,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 09:07:46,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:46,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 09:07:46,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:46,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:46,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:46,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 09:07:46,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:46,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-25 09:07:46,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:46,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:46,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:46,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:07:46,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 09:07:46,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:46,970 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 185 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 09:07:46,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898826849] [2020-09-25 09:07:46,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:07:46,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:07:46,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722278354] [2020-09-25 09:07:46,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:07:46,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:46,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:07:46,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:07:46,973 INFO L87 Difference]: Start difference. First operand 1970 states and 2444 transitions. Second operand 8 states. [2020-09-25 09:07:49,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:49,511 INFO L93 Difference]: Finished difference Result 4363 states and 5393 transitions. [2020-09-25 09:07:49,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:07:49,512 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 281 [2020-09-25 09:07:49,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:49,524 INFO L225 Difference]: With dead ends: 4363 [2020-09-25 09:07:49,524 INFO L226 Difference]: Without dead ends: 2408 [2020-09-25 09:07:49,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:07:49,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2408 states. [2020-09-25 09:07:49,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2408 to 2167. [2020-09-25 09:07:49,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2167 states. [2020-09-25 09:07:49,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2167 states to 2167 states and 2661 transitions. [2020-09-25 09:07:49,582 INFO L78 Accepts]: Start accepts. Automaton has 2167 states and 2661 transitions. Word has length 281 [2020-09-25 09:07:49,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:49,583 INFO L479 AbstractCegarLoop]: Abstraction has 2167 states and 2661 transitions. [2020-09-25 09:07:49,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:07:49,583 INFO L276 IsEmpty]: Start isEmpty. Operand 2167 states and 2661 transitions. [2020-09-25 09:07:49,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-09-25 09:07:49,593 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:49,594 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:07:49,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:07:49,594 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:49,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:49,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1315602251, now seen corresponding path program 1 times [2020-09-25 09:07:49,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:49,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417500207] [2020-09-25 09:07:49,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:49,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:49,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:50,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:50,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking...