/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/Problem01_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:34:11,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:34:11,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:34:11,480 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:34:11,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:34:11,482 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:34:11,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:34:11,485 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:34:11,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:34:11,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:34:11,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:34:11,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:34:11,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:34:11,492 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:34:11,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:34:11,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:34:11,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:34:11,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:34:11,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:34:11,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:34:11,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:34:11,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:34:11,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:34:11,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:34:11,510 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:34:11,510 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:34:11,510 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:34:11,511 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:34:11,512 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:34:11,513 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:34:11,513 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:34:11,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:34:11,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:34:11,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:34:11,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:34:11,517 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:34:11,518 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:34:11,518 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:34:11,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:34:11,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:34:11,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:34:11,521 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 05:34:11,548 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:34:11,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:34:11,550 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:34:11,550 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:34:11,550 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:34:11,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:34:11,551 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:34:11,551 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:34:11,551 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:34:11,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:34:11,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:34:11,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:34:11,552 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:34:11,552 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:34:11,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:34:11,552 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:34:11,552 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:34:11,553 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:34:11,553 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:34:11,553 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:34:11,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:34:11,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:34:11,554 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:34:11,554 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:34:11,554 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:34:11,554 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:34:11,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:34:11,555 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:34:11,555 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:34:11,555 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 05:34:12,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:34:12,080 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:34:12,085 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:34:12,087 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:34:12,087 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:34:12,089 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label42.c [2020-09-25 05:34:12,171 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfebdd6f2/c5864513a7f343309b94c12e4cebf917/FLAGc2f584feb [2020-09-25 05:34:12,854 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:34:12,855 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label42.c [2020-09-25 05:34:12,878 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfebdd6f2/c5864513a7f343309b94c12e4cebf917/FLAGc2f584feb [2020-09-25 05:34:13,034 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfebdd6f2/c5864513a7f343309b94c12e4cebf917 [2020-09-25 05:34:13,046 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:34:13,053 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:34:13,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:34:13,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:34:13,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:34:13,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:34:13" (1/1) ... [2020-09-25 05:34:13,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@788ef5e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:13, skipping insertion in model container [2020-09-25 05:34:13,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:34:13" (1/1) ... [2020-09-25 05:34:13,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:34:13,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:34:13,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:34:13,622 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:34:13,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:34:13,876 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:34:13,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:13 WrapperNode [2020-09-25 05:34:13,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:34:13,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:34:13,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:34:13,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:34:13,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:13" (1/1) ... [2020-09-25 05:34:13,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:13" (1/1) ... [2020-09-25 05:34:13,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:13" (1/1) ... [2020-09-25 05:34:13,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:13" (1/1) ... [2020-09-25 05:34:13,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:13" (1/1) ... [2020-09-25 05:34:13,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:13" (1/1) ... [2020-09-25 05:34:14,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:13" (1/1) ... [2020-09-25 05:34:14,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:34:14,018 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:34:14,018 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:34:14,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:34:14,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:13" (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 05:34:14,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:34:14,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:34:14,123 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:34:14,123 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:34:14,123 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:34:14,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:34:14,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:34:14,126 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:34:14,126 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:34:14,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:34:14,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:34:15,582 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:34:15,582 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:34:15,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:34:15 BoogieIcfgContainer [2020-09-25 05:34:15,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:34:15,604 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:34:15,604 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:34:15,610 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:34:15,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:34:13" (1/3) ... [2020-09-25 05:34:15,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76839004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:34:15, skipping insertion in model container [2020-09-25 05:34:15,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:13" (2/3) ... [2020-09-25 05:34:15,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76839004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:34:15, skipping insertion in model container [2020-09-25 05:34:15,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:34:15" (3/3) ... [2020-09-25 05:34:15,618 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label42.c [2020-09-25 05:34:15,633 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:34:15,657 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:34:15,684 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:34:15,731 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:34:15,731 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:34:15,732 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:34:15,732 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:34:15,732 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:34:15,732 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:34:15,732 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:34:15,732 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:34:15,775 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 05:34:15,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 05:34:15,815 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:15,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:34:15,817 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:15,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:15,826 INFO L82 PathProgramCache]: Analyzing trace with hash 907543029, now seen corresponding path program 1 times [2020-09-25 05:34:15,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:15,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096151413] [2020-09-25 05:34:15,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:16,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:16,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:17,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:18,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:21,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:21,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:21,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:21,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 05:34:21,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:34:21,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 05:34:21,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:21,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:21,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:34:21,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 05:34:21,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 05:34:21,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:34:21,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:21,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:21,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:21,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:21,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:21,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:21,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 05:34:21,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:21,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:21,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:21,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:21,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:34:21,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:21,599 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 05:34:21,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096151413] [2020-09-25 05:34:21,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:34:21,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:34:21,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937840660] [2020-09-25 05:34:21,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:34:21,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:21,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:34:21,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:34:21,632 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 05:34:23,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:23,828 INFO L93 Difference]: Finished difference Result 1235 states and 1633 transitions. [2020-09-25 05:34:23,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:34:23,830 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-25 05:34:23,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:23,856 INFO L225 Difference]: With dead ends: 1235 [2020-09-25 05:34:23,857 INFO L226 Difference]: Without dead ends: 661 [2020-09-25 05:34:23,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:34:23,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2020-09-25 05:34:23,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 605. [2020-09-25 05:34:23,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2020-09-25 05:34:23,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 715 transitions. [2020-09-25 05:34:23,986 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 715 transitions. Word has length 143 [2020-09-25 05:34:23,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:23,987 INFO L479 AbstractCegarLoop]: Abstraction has 605 states and 715 transitions. [2020-09-25 05:34:23,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:34:23,987 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 715 transitions. [2020-09-25 05:34:23,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 05:34:23,994 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:23,994 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:34:23,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:34:23,995 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:23,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:23,995 INFO L82 PathProgramCache]: Analyzing trace with hash 201587256, now seen corresponding path program 1 times [2020-09-25 05:34:23,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:23,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842341420] [2020-09-25 05:34:23,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:24,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:24,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:24,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:24,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:24,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:27,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:27,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:28,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:29,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:29,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 05:34:29,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:34:29,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 05:34:29,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:29,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:29,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:29,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 05:34:29,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 05:34:29,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:29,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:29,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:29,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:29,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:29,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:29,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:29,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:34:29,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:29,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:29,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:29,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:29,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:29,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:29,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:29,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:29,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:29,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:29,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:34:29,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:29,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:34:29,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:29,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:29,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:29,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:29,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 05:34:29,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:29,301 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:34:29,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842341420] [2020-09-25 05:34:29,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:29,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:34:29,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558979383] [2020-09-25 05:34:29,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:34:29,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:29,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:34:29,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:34:29,306 INFO L87 Difference]: Start difference. First operand 605 states and 715 transitions. Second operand 5 states. [2020-09-25 05:34:31,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:31,320 INFO L93 Difference]: Finished difference Result 1505 states and 1856 transitions. [2020-09-25 05:34:31,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:34:31,321 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-09-25 05:34:31,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:31,330 INFO L225 Difference]: With dead ends: 1505 [2020-09-25 05:34:31,330 INFO L226 Difference]: Without dead ends: 924 [2020-09-25 05:34:31,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:34:31,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2020-09-25 05:34:31,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 891. [2020-09-25 05:34:31,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-25 05:34:31,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1084 transitions. [2020-09-25 05:34:31,374 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1084 transitions. Word has length 160 [2020-09-25 05:34:31,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:31,375 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1084 transitions. [2020-09-25 05:34:31,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:34:31,376 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1084 transitions. [2020-09-25 05:34:31,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-25 05:34:31,382 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:31,382 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:34:31,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:34:31,383 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:31,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:31,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1554589942, now seen corresponding path program 1 times [2020-09-25 05:34:31,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:31,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932425995] [2020-09-25 05:34:31,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:31,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:31,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:31,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:31,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:31,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:32,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:33,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:36,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:36,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-25 05:34:36,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:34:36,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 05:34:36,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:36,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:36,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:36,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 05:34:36,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 05:34:36,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:36,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:36,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:36,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:36,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:36,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:36,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 05:34:36,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:36,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:36,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:36,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:36,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:36,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:36,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:36,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:36,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:36,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:36,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:34:36,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:36,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 05:34:36,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:36,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:36,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:36,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:36,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:34:36,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:36,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 05:34:36,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:36,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:36,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:36,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 05:34:36,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:36,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 05:34:36,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:36,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:36,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:36,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:34:36,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 05:34:36,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:36,811 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:34:36,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932425995] [2020-09-25 05:34:36,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:36,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:34:36,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169689162] [2020-09-25 05:34:36,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:34:36,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:36,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:34:36,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:34:36,814 INFO L87 Difference]: Start difference. First operand 891 states and 1084 transitions. Second operand 7 states. [2020-09-25 05:34:38,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:38,958 INFO L93 Difference]: Finished difference Result 2144 states and 2702 transitions. [2020-09-25 05:34:38,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:34:38,960 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2020-09-25 05:34:38,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:38,971 INFO L225 Difference]: With dead ends: 2144 [2020-09-25 05:34:38,971 INFO L226 Difference]: Without dead ends: 1277 [2020-09-25 05:34:38,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:34:38,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2020-09-25 05:34:39,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1077. [2020-09-25 05:34:39,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077 states. [2020-09-25 05:34:39,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1328 transitions. [2020-09-25 05:34:39,054 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1328 transitions. Word has length 205 [2020-09-25 05:34:39,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:39,055 INFO L479 AbstractCegarLoop]: Abstraction has 1077 states and 1328 transitions. [2020-09-25 05:34:39,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:34:39,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1328 transitions. [2020-09-25 05:34:39,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 05:34:39,063 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:39,063 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:34:39,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:34:39,064 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:39,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:39,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1933456907, now seen corresponding path program 1 times [2020-09-25 05:34:39,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:39,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703086408] [2020-09-25 05:34:39,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:39,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:39,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:39,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:39,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:40,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:41,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:42,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:44,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:44,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:44,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:44,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-09-25 05:34:44,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:34:44,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 05:34:44,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:44,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:44,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:34:44,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 05:34:44,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 05:34:44,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:44,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:44,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:44,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:44,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:44,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:44,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:44,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 05:34:44,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:44,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:44,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:44,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:44,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:44,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:34:44,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:44,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:44,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:44,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:44,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 05:34:44,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:44,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 05:34:44,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:44,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:44,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:34:44,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:44,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:34:44,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:44,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 05:34:44,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:44,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:44,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:44,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 05:34:44,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:44,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 05:34:44,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:44,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:44,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:44,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:34:44,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 05:34:44,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:44,770 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:34:44,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703086408] [2020-09-25 05:34:44,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:44,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:34:44,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389488631] [2020-09-25 05:34:44,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:34:44,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:44,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:34:44,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:34:44,777 INFO L87 Difference]: Start difference. First operand 1077 states and 1328 transitions. Second operand 8 states. [2020-09-25 05:34:45,514 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-09-25 05:34:48,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:48,197 INFO L93 Difference]: Finished difference Result 2861 states and 3598 transitions. [2020-09-25 05:34:48,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 05:34:48,198 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 212 [2020-09-25 05:34:48,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:48,208 INFO L225 Difference]: With dead ends: 2861 [2020-09-25 05:34:48,208 INFO L226 Difference]: Without dead ends: 1808 [2020-09-25 05:34:48,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-09-25 05:34:48,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2020-09-25 05:34:48,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1703. [2020-09-25 05:34:48,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1703 states. [2020-09-25 05:34:48,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1703 states to 1703 states and 2091 transitions. [2020-09-25 05:34:48,266 INFO L78 Accepts]: Start accepts. Automaton has 1703 states and 2091 transitions. Word has length 212 [2020-09-25 05:34:48,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:48,266 INFO L479 AbstractCegarLoop]: Abstraction has 1703 states and 2091 transitions. [2020-09-25 05:34:48,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:34:48,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1703 states and 2091 transitions. [2020-09-25 05:34:48,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-09-25 05:34:48,275 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:48,276 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:34:48,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:34:48,276 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:48,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:48,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1545156718, now seen corresponding path program 1 times [2020-09-25 05:34:48,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:48,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753419796] [2020-09-25 05:34:48,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:48,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:48,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:48,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:48,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:48,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:48,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:49,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:49,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:49,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:50,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:50,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:53,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:53,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-09-25 05:34:53,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:34:53,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 05:34:53,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:53,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:53,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:53,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-25 05:34:53,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 05:34:53,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:53,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:53,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:53,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:53,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:53,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:53,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:53,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:34:53,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:53,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:53,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:53,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:53,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:53,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:53,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:53,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:53,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:53,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 05:34:53,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:53,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:34:53,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:53,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:53,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:53,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:53,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:53,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:53,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 05:34:53,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:53,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:53,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:53,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 05:34:53,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:53,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 05:34:53,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:53,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:53,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:53,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:53,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 05:34:53,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:53,724 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 05:34:53,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753419796] [2020-09-25 05:34:53,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:53,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:34:53,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352661698] [2020-09-25 05:34:53,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:34:53,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:53,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:34:53,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:34:53,727 INFO L87 Difference]: Start difference. First operand 1703 states and 2091 transitions. Second operand 5 states. [2020-09-25 05:34:55,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:55,757 INFO L93 Difference]: Finished difference Result 3964 states and 4900 transitions. [2020-09-25 05:34:55,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:34:55,758 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 227 [2020-09-25 05:34:55,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:55,768 INFO L225 Difference]: With dead ends: 3964 [2020-09-25 05:34:55,769 INFO L226 Difference]: Without dead ends: 1634 [2020-09-25 05:34:55,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:34:55,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2020-09-25 05:34:55,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1624. [2020-09-25 05:34:55,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1624 states. [2020-09-25 05:34:55,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 1966 transitions. [2020-09-25 05:34:55,836 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 1966 transitions. Word has length 227 [2020-09-25 05:34:55,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:55,836 INFO L479 AbstractCegarLoop]: Abstraction has 1624 states and 1966 transitions. [2020-09-25 05:34:55,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:34:55,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 1966 transitions. [2020-09-25 05:34:55,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-25 05:34:55,845 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:55,846 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:34:55,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:34:55,846 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:55,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:55,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1062084122, now seen corresponding path program 1 times [2020-09-25 05:34:55,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:55,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993433255] [2020-09-25 05:34:55,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:55,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:55,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:56,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:56,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:56,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:56,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:56,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:56,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:56,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:56,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:57,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:00,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:00,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-09-25 05:35:00,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:35:00,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 05:35:00,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:00,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:00,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:00,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-09-25 05:35:00,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 05:35:00,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:01,153 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-09-25 05:35:01,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:01,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:01,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:01,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:35:01,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:01,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:35:01,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:01,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:01,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:01,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:01,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:01,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:01,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:35:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:01,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:01,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:01,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 05:35:01,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:01,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:35:01,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:01,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:01,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:01,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:01,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:01,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 05:35:01,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 05:35:01,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:01,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:01,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:01,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 05:35:01,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:01,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 05:35:01,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:01,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:01,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:01,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:01,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 05:35:01,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:01,425 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 05:35:01,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993433255] [2020-09-25 05:35:01,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:35:01,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:35:01,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820879203] [2020-09-25 05:35:01,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:35:01,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:01,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:35:01,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:35:01,429 INFO L87 Difference]: Start difference. First operand 1624 states and 1966 transitions. Second operand 5 states.