/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:37:40,281 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:37:40,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:37:40,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:37:40,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:37:40,350 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:37:40,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:37:40,355 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:37:40,357 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:37:40,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:37:40,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:37:40,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:37:40,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:37:40,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:37:40,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:37:40,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:37:40,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:37:40,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:37:40,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:37:40,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:37:40,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:37:40,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:37:40,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:37:40,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:37:40,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:37:40,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:37:40,379 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:37:40,380 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:37:40,381 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:37:40,382 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:37:40,382 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:37:40,383 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:37:40,384 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:37:40,385 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:37:40,386 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:37:40,387 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:37:40,387 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:37:40,388 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:37:40,388 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:37:40,389 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:37:40,390 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:37:40,391 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 05:37:40,417 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:37:40,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:37:40,419 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:37:40,419 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:37:40,419 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:37:40,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:37:40,420 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:37:40,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:37:40,420 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:37:40,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:37:40,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:37:40,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:37:40,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:37:40,421 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:37:40,422 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:37:40,422 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:37:40,422 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:37:40,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:37:40,422 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:37:40,423 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:37:40,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:37:40,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:37:40,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:37:40,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:37:40,424 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:37:40,424 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:37:40,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:37:40,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:37:40,425 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:37:40,425 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:37:40,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:37:40,893 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:37:40,898 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:37:40,900 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:37:40,901 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:37:40,902 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label03.c [2020-09-25 05:37:40,990 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8847e8ff7/d46b7a342fd843d5982d33b0fdfbc464/FLAGa940101a8 [2020-09-25 05:37:41,680 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:37:41,681 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label03.c [2020-09-25 05:37:41,702 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8847e8ff7/d46b7a342fd843d5982d33b0fdfbc464/FLAGa940101a8 [2020-09-25 05:37:41,891 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8847e8ff7/d46b7a342fd843d5982d33b0fdfbc464 [2020-09-25 05:37:41,907 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:37:41,914 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:37:41,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:37:41,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:37:41,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:37:41,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:37:41" (1/1) ... [2020-09-25 05:37:41,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73111a80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:41, skipping insertion in model container [2020-09-25 05:37:41,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:37:41" (1/1) ... [2020-09-25 05:37:41,941 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:37:42,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:37:42,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:37:42,486 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:37:42,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:37:42,738 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:37:42,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:42 WrapperNode [2020-09-25 05:37:42,738 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:37:42,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:37:42,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:37:42,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:37:42,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:42" (1/1) ... [2020-09-25 05:37:42,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:42" (1/1) ... [2020-09-25 05:37:42,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:42" (1/1) ... [2020-09-25 05:37:42,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:42" (1/1) ... [2020-09-25 05:37:42,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:42" (1/1) ... [2020-09-25 05:37:42,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:42" (1/1) ... [2020-09-25 05:37:42,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:42" (1/1) ... [2020-09-25 05:37:42,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:37:42,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:37:42,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:37:42,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:37:42,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:42" (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 05:37:42,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:37:42,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:37:42,942 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:37:42,943 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:37:42,943 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:37:42,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:37:42,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:37:42,944 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:37:42,944 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:37:42,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:37:42,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:37:44,447 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:37:44,447 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:37:44,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:37:44 BoogieIcfgContainer [2020-09-25 05:37:44,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:37:44,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:37:44,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:37:44,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:37:44,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:37:41" (1/3) ... [2020-09-25 05:37:44,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33bd88af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:37:44, skipping insertion in model container [2020-09-25 05:37:44,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:42" (2/3) ... [2020-09-25 05:37:44,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33bd88af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:37:44, skipping insertion in model container [2020-09-25 05:37:44,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:37:44" (3/3) ... [2020-09-25 05:37:44,466 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label03.c [2020-09-25 05:37:44,478 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:37:44,489 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:37:44,509 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:37:44,544 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:37:44,544 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:37:44,544 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:37:44,544 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:37:44,544 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:37:44,545 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:37:44,545 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:37:44,545 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:37:44,574 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 05:37:44,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 05:37:44,584 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:44,586 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] [2020-09-25 05:37:44,586 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:44,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:44,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1813443015, now seen corresponding path program 1 times [2020-09-25 05:37:44,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:44,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40381182] [2020-09-25 05:37:44,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:44,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:45,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:45,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:46,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:46,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 05:37:46,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:37:46,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1231 [2020-09-25 05:37:46,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:46,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:46,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:37:46,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:37:46,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 05:37:46,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:37:46,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:46,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:46,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:46,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:46,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:37:46,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:46,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 05:37:46,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:46,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:46,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:46,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:46,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:37:46,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:46,275 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 05:37:46,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40381182] [2020-09-25 05:37:46,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:37:46,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:37:46,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169828795] [2020-09-25 05:37:46,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:37:46,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:46,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:37:46,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:37:46,308 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 05:37:49,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:49,559 INFO L93 Difference]: Finished difference Result 1358 states and 1918 transitions. [2020-09-25 05:37:49,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:37:49,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-09-25 05:37:49,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:49,604 INFO L225 Difference]: With dead ends: 1358 [2020-09-25 05:37:49,605 INFO L226 Difference]: Without dead ends: 812 [2020-09-25 05:37:49,617 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 05:37:49,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-09-25 05:37:49,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 738. [2020-09-25 05:37:49,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-09-25 05:37:49,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 928 transitions. [2020-09-25 05:37:49,723 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 928 transitions. Word has length 55 [2020-09-25 05:37:49,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:49,724 INFO L479 AbstractCegarLoop]: Abstraction has 738 states and 928 transitions. [2020-09-25 05:37:49,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:37:49,724 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 928 transitions. [2020-09-25 05:37:49,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 05:37:49,732 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:49,733 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:49,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:37:49,733 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:49,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:49,734 INFO L82 PathProgramCache]: Analyzing trace with hash -226140616, now seen corresponding path program 1 times [2020-09-25 05:37:49,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:49,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421142016] [2020-09-25 05:37:49,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:49,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:49,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:50,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:50,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:50,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:52,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:52,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 05:37:52,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:37:52,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2669 [2020-09-25 05:37:52,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:52,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:52,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:52,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 05:37:52,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 05:37:52,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:52,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:52,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:52,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:52,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:52,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:37:52,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:52,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:37:52,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:52,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:52,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:52,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:52,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:52,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:52,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:37:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:52,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:52,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:52,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 05:37:52,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:52,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 05:37:52,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:52,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:52,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:52,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:52,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 05:37:52,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:52,725 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:37:52,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421142016] [2020-09-25 05:37:52,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:52,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:37:52,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358213647] [2020-09-25 05:37:52,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:37:52,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:52,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:37:52,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:37:52,730 INFO L87 Difference]: Start difference. First operand 738 states and 928 transitions. Second operand 5 states. [2020-09-25 05:37:54,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:54,518 INFO L93 Difference]: Finished difference Result 1762 states and 2316 transitions. [2020-09-25 05:37:54,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:37:54,519 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-09-25 05:37:54,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:54,532 INFO L225 Difference]: With dead ends: 1762 [2020-09-25 05:37:54,532 INFO L226 Difference]: Without dead ends: 1039 [2020-09-25 05:37:54,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:37:54,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-09-25 05:37:54,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1039. [2020-09-25 05:37:54,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-09-25 05:37:54,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1333 transitions. [2020-09-25 05:37:54,582 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1333 transitions. Word has length 134 [2020-09-25 05:37:54,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:54,583 INFO L479 AbstractCegarLoop]: Abstraction has 1039 states and 1333 transitions. [2020-09-25 05:37:54,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:37:54,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1333 transitions. [2020-09-25 05:37:54,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 05:37:54,592 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:54,592 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:54,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:37:54,593 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:54,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:54,593 INFO L82 PathProgramCache]: Analyzing trace with hash -58375918, now seen corresponding path program 1 times [2020-09-25 05:37:54,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:54,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059373803] [2020-09-25 05:37:54,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:54,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:54,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:54,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:54,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:56,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:56,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 05:37:56,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:37:56,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2325 [2020-09-25 05:37:56,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:56,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:56,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:56,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-09-25 05:37:56,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 05:37:56,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:37:57,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:57,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:57,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:57,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:37:57,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:57,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:37:57,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:57,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:57,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:57,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:57,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:57,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:57,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:37:57,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:57,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:57,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:57,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 05:37:57,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:57,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 05:37:57,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:57,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:57,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:57,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:57,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 05:37:57,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:57,252 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:37:57,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059373803] [2020-09-25 05:37:57,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:57,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:37:57,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12906625] [2020-09-25 05:37:57,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:37:57,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:57,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:37:57,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:37:57,256 INFO L87 Difference]: Start difference. First operand 1039 states and 1333 transitions. Second operand 6 states. [2020-09-25 05:37:59,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:59,571 INFO L93 Difference]: Finished difference Result 3146 states and 4352 transitions. [2020-09-25 05:37:59,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:37:59,574 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2020-09-25 05:37:59,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:59,594 INFO L225 Difference]: With dead ends: 3146 [2020-09-25 05:37:59,594 INFO L226 Difference]: Without dead ends: 2272 [2020-09-25 05:37:59,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:37:59,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2272 states. [2020-09-25 05:37:59,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2272 to 2252. [2020-09-25 05:37:59,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2252 states. [2020-09-25 05:37:59,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2252 states to 2252 states and 2865 transitions. [2020-09-25 05:37:59,691 INFO L78 Accepts]: Start accepts. Automaton has 2252 states and 2865 transitions. Word has length 146 [2020-09-25 05:37:59,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:59,692 INFO L479 AbstractCegarLoop]: Abstraction has 2252 states and 2865 transitions. [2020-09-25 05:37:59,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:37:59,693 INFO L276 IsEmpty]: Start isEmpty. Operand 2252 states and 2865 transitions. [2020-09-25 05:37:59,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-09-25 05:37:59,707 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:59,708 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:37:59,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:37:59,708 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:59,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:59,709 INFO L82 PathProgramCache]: Analyzing trace with hash -442827895, now seen corresponding path program 1 times [2020-09-25 05:37:59,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:59,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739298573] [2020-09-25 05:37:59,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:59,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:59,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:00,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:01,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:01,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:02,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:02,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:04,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:04,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-09-25 05:38:04,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:38:04,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:38:04,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:04,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:04,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:38:04,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 05:38:04,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 05:38:04,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:04,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:04,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:04,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:04,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:04,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:04,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:04,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:38:04,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:04,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:04,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:04,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:04,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:04,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:04,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:04,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:05,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:05,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 05:38:05,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:05,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 05:38:05,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:05,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:05,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:38:05,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:05,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 05:38:05,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:05,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 05:38:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:05,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:05,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:05,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:38:05,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:05,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-25 05:38:05,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:05,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:05,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:05,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:38:05,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 05:38:05,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:05,330 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:38:05,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739298573] [2020-09-25 05:38:05,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:05,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:38:05,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315459373] [2020-09-25 05:38:05,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:38:05,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:05,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:38:05,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:38:05,333 INFO L87 Difference]: Start difference. First operand 2252 states and 2865 transitions. Second operand 8 states. [2020-09-25 05:38:08,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:08,719 INFO L93 Difference]: Finished difference Result 6579 states and 8974 transitions. [2020-09-25 05:38:08,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 05:38:08,719 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 223 [2020-09-25 05:38:08,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:08,753 INFO L225 Difference]: With dead ends: 6579 [2020-09-25 05:38:08,753 INFO L226 Difference]: Without dead ends: 4492 [2020-09-25 05:38:08,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-09-25 05:38:08,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4492 states. [2020-09-25 05:38:08,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4492 to 4295. [2020-09-25 05:38:08,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4295 states. [2020-09-25 05:38:08,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4295 states to 4295 states and 5772 transitions. [2020-09-25 05:38:08,939 INFO L78 Accepts]: Start accepts. Automaton has 4295 states and 5772 transitions. Word has length 223 [2020-09-25 05:38:08,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:08,940 INFO L479 AbstractCegarLoop]: Abstraction has 4295 states and 5772 transitions. [2020-09-25 05:38:08,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:38:08,940 INFO L276 IsEmpty]: Start isEmpty. Operand 4295 states and 5772 transitions. [2020-09-25 05:38:08,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-25 05:38:08,947 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:08,947 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 05:38:08,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:38:08,948 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:08,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:08,949 INFO L82 PathProgramCache]: Analyzing trace with hash 373108045, now seen corresponding path program 1 times [2020-09-25 05:38:08,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:08,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957840690] [2020-09-25 05:38:08,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:09,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:09,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:09,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:09,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:09,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:09,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:14,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:14,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-09-25 05:38:14,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:38:14,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 05:38:14,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:14,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:14,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:14,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 05:38:14,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 05:38:14,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:14,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:14,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:14,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:14,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:14,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:14,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:14,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:38:14,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:14,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:14,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:14,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:14,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:14,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:14,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:14,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:14,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:14,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:38:14,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:14,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 05:38:14,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:14,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:14,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:14,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:14,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 05:38:14,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:14,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 05:38:14,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:14,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:14,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:14,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 05:38:14,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:14,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-09-25 05:38:14,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:14,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:14,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:14,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:38:14,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 05:38:14,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:14,662 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:38:14,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957840690] [2020-09-25 05:38:14,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:14,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:38:14,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671454037] [2020-09-25 05:38:14,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:38:14,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:14,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:38:14,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:38:14,666 INFO L87 Difference]: Start difference. First operand 4295 states and 5772 transitions. Second operand 8 states. [2020-09-25 05:38:17,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:17,730 INFO L93 Difference]: Finished difference Result 9983 states and 13692 transitions. [2020-09-25 05:38:17,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 05:38:17,734 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 236 [2020-09-25 05:38:17,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:17,770 INFO L225 Difference]: With dead ends: 9983 [2020-09-25 05:38:17,770 INFO L226 Difference]: Without dead ends: 5853 [2020-09-25 05:38:17,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 05:38:17,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5853 states. [2020-09-25 05:38:17,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5853 to 5529. [2020-09-25 05:38:17,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5529 states. [2020-09-25 05:38:17,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5529 states to 5529 states and 7159 transitions. [2020-09-25 05:38:17,956 INFO L78 Accepts]: Start accepts. Automaton has 5529 states and 7159 transitions. Word has length 236 [2020-09-25 05:38:17,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:17,957 INFO L479 AbstractCegarLoop]: Abstraction has 5529 states and 7159 transitions. [2020-09-25 05:38:17,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:38:17,958 INFO L276 IsEmpty]: Start isEmpty. Operand 5529 states and 7159 transitions. [2020-09-25 05:38:17,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-09-25 05:38:17,965 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:18,009 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 05:38:18,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:38:18,009 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:18,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:18,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1838480665, now seen corresponding path program 1 times [2020-09-25 05:38:18,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:18,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774780756] [2020-09-25 05:38:18,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:18,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:18,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:18,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:18,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:18,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:18,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:21,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:23,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:23,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-09-25 05:38:23,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:38:23,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 05:38:23,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:23,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:23,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:23,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 05:38:23,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 05:38:23,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:23,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:23,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:23,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:23,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:23,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:23,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:38:23,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:23,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:23,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:23,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:23,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:23,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:23,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:23,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:23,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:23,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:38:23,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:23,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 05:38:23,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:23,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:23,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:23,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:23,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 05:38:23,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:23,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 05:38:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:23,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:23,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:23,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 05:38:23,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:23,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-09-25 05:38:23,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:23,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:23,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:23,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:38:23,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 05:38:23,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:23,720 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:38:23,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774780756] [2020-09-25 05:38:23,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:23,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:38:23,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050556440] [2020-09-25 05:38:23,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:38:23,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:23,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:38:23,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:38:23,724 INFO L87 Difference]: Start difference. First operand 5529 states and 7159 transitions. Second operand 7 states. [2020-09-25 05:38:26,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:26,137 INFO L93 Difference]: Finished difference Result 11665 states and 15500 transitions. [2020-09-25 05:38:26,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:38:26,138 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 246 [2020-09-25 05:38:26,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:26,166 INFO L225 Difference]: With dead ends: 11665 [2020-09-25 05:38:26,166 INFO L226 Difference]: Without dead ends: 4407 [2020-09-25 05:38:26,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:38:26,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4407 states. [2020-09-25 05:38:26,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4407 to 4097. [2020-09-25 05:38:26,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4097 states. [2020-09-25 05:38:26,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4097 states to 4097 states and 4922 transitions. [2020-09-25 05:38:26,310 INFO L78 Accepts]: Start accepts. Automaton has 4097 states and 4922 transitions. Word has length 246 [2020-09-25 05:38:26,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:26,311 INFO L479 AbstractCegarLoop]: Abstraction has 4097 states and 4922 transitions. [2020-09-25 05:38:26,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:38:26,311 INFO L276 IsEmpty]: Start isEmpty. Operand 4097 states and 4922 transitions. [2020-09-25 05:38:26,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-09-25 05:38:26,319 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:26,319 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 05:38:26,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:38:26,319 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:26,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:26,320 INFO L82 PathProgramCache]: Analyzing trace with hash -95692249, now seen corresponding path program 1 times [2020-09-25 05:38:26,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:26,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669486249] [2020-09-25 05:38:26,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:26,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:26,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:27,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking...