/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=0.6 --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_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:47:03,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:47:03,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:47:03,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:47:03,345 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:47:03,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:47:03,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:47:03,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:47:03,351 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:47:03,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:47:03,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:47:03,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:47:03,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:47:03,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:47:03,357 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:47:03,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:47:03,360 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:47:03,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:47:03,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:47:03,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:47:03,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:47:03,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:47:03,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:47:03,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:47:03,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:47:03,385 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:47:03,385 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:47:03,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:47:03,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:47:03,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:47:03,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:47:03,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:47:03,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:47:03,394 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:47:03,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:47:03,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:47:03,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:47:03,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:47:03,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:47:03,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:47:03,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:47:03,401 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 06:47:03,460 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:47:03,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:47:03,463 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:47:03,464 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:47:03,464 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:47:03,464 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:47:03,464 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:47:03,465 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:47:03,465 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:47:03,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:47:03,465 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:47:03,465 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:47:03,466 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:47:03,466 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:47:03,467 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:47:03,467 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:47:03,467 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:47:03,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:47:03,467 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:47:03,468 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:47:03,468 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:47:03,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:47:03,469 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:47:03,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:47:03,469 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:47:03,469 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:47:03,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:47:03,470 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:47:03,470 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:47:03,470 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:47:03,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:47:04,020 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:47:04,027 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:47:04,029 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:47:04,030 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:47:04,031 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label13.c [2020-09-25 06:47:04,119 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ddf8b5a4/323b9a921cdf4f4185cf5fb8c1049bbb/FLAG6843ed1dc [2020-09-25 06:47:04,773 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:47:04,774 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label13.c [2020-09-25 06:47:04,791 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ddf8b5a4/323b9a921cdf4f4185cf5fb8c1049bbb/FLAG6843ed1dc [2020-09-25 06:47:05,008 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ddf8b5a4/323b9a921cdf4f4185cf5fb8c1049bbb [2020-09-25 06:47:05,023 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:47:05,029 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:47:05,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:47:05,030 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:47:05,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:47:05,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:47:05" (1/1) ... [2020-09-25 06:47:05,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347c51ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:05, skipping insertion in model container [2020-09-25 06:47:05,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:47:05" (1/1) ... [2020-09-25 06:47:05,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:47:05,100 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:47:05,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:47:05,545 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:47:05,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:47:05,800 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:47:05,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:05 WrapperNode [2020-09-25 06:47:05,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:47:05,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:47:05,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:47:05,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:47:05,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:05" (1/1) ... [2020-09-25 06:47:05,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:05" (1/1) ... [2020-09-25 06:47:05,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:05" (1/1) ... [2020-09-25 06:47:05,840 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:05" (1/1) ... [2020-09-25 06:47:05,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:05" (1/1) ... [2020-09-25 06:47:05,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:05" (1/1) ... [2020-09-25 06:47:05,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:05" (1/1) ... [2020-09-25 06:47:05,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:47:05,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:47:05,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:47:05,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:47:05,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:05" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:47:06,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:47:06,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:47:06,019 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:47:06,019 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:47:06,019 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:47:06,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:47:06,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:47:06,020 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:47:06,020 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:47:06,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:47:06,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:47:07,586 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:47:07,587 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:47:07,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:47:07 BoogieIcfgContainer [2020-09-25 06:47:07,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:47:07,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:47:07,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:47:07,602 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:47:07,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:47:05" (1/3) ... [2020-09-25 06:47:07,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b01f935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:47:07, skipping insertion in model container [2020-09-25 06:47:07,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:05" (2/3) ... [2020-09-25 06:47:07,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b01f935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:47:07, skipping insertion in model container [2020-09-25 06:47:07,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:47:07" (3/3) ... [2020-09-25 06:47:07,607 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label13.c [2020-09-25 06:47:07,619 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:47:07,630 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:47:07,653 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:47:07,687 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:47:07,688 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:47:07,688 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:47:07,688 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:47:07,688 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:47:07,688 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:47:07,688 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:47:07,689 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:47:07,720 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 06:47:07,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 06:47:07,732 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:07,733 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] [2020-09-25 06:47:07,734 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:07,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:07,742 INFO L82 PathProgramCache]: Analyzing trace with hash -538548697, now seen corresponding path program 1 times [2020-09-25 06:47:07,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:07,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214183840] [2020-09-25 06:47:07,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:07,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:08,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:08,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:08,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:09,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:09,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 06:47:09,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:47:09,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1224 [2020-09-25 06:47:09,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:09,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:09,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:47:09,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:47:09,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 06:47:09,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:47:09,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:09,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:09,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:09,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:09,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:09,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 06:47:09,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:09,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:09,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:09,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:09,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:47:09,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:47:09,441 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 06:47:09,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214183840] [2020-09-25 06:47:09,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:47:09,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:47:09,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347371110] [2020-09-25 06:47:09,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:47:09,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:09,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:47:09,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:47:09,477 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 06:47:12,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:12,703 INFO L93 Difference]: Finished difference Result 1352 states and 1911 transitions. [2020-09-25 06:47:12,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:47:12,707 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-09-25 06:47:12,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:12,734 INFO L225 Difference]: With dead ends: 1352 [2020-09-25 06:47:12,734 INFO L226 Difference]: Without dead ends: 806 [2020-09-25 06:47:12,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:47:12,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-09-25 06:47:12,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 727. [2020-09-25 06:47:12,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-09-25 06:47:12,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 896 transitions. [2020-09-25 06:47:12,858 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 896 transitions. Word has length 74 [2020-09-25 06:47:12,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:12,859 INFO L479 AbstractCegarLoop]: Abstraction has 727 states and 896 transitions. [2020-09-25 06:47:12,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:47:12,859 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 896 transitions. [2020-09-25 06:47:12,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 06:47:12,869 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:12,870 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:47:12,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:47:12,870 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:12,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:12,871 INFO L82 PathProgramCache]: Analyzing trace with hash 607028325, now seen corresponding path program 1 times [2020-09-25 06:47:12,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:12,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988134136] [2020-09-25 06:47:12,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:12,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:12,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:13,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:13,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:13,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:14,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:14,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:14,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:15,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:17,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:17,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 06:47:17,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:47:17,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 06:47:17,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:17,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:17,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:47:17,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:47:17,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:47:17,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:18,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:18,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:18,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:18,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:18,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:18,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:18,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 06:47:18,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:18,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:18,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:18,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:18,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:47:18,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:18,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:18,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:18,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:18,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 06:47:18,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:18,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-25 06:47:18,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:18,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:18,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:18,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:18,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 06:47:18,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:18,324 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:47:18,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988134136] [2020-09-25 06:47:18,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:47:18,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:47:18,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855926969] [2020-09-25 06:47:18,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:47:18,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:18,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:47:18,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:47:18,329 INFO L87 Difference]: Start difference. First operand 727 states and 896 transitions. Second operand 7 states. [2020-09-25 06:47:20,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:20,784 INFO L93 Difference]: Finished difference Result 1802 states and 2319 transitions. [2020-09-25 06:47:20,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:47:20,785 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 157 [2020-09-25 06:47:20,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:20,794 INFO L225 Difference]: With dead ends: 1802 [2020-09-25 06:47:20,795 INFO L226 Difference]: Without dead ends: 1090 [2020-09-25 06:47:20,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:47:20,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2020-09-25 06:47:20,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1040. [2020-09-25 06:47:20,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1040 states. [2020-09-25 06:47:20,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1243 transitions. [2020-09-25 06:47:20,857 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1243 transitions. Word has length 157 [2020-09-25 06:47:20,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:20,858 INFO L479 AbstractCegarLoop]: Abstraction has 1040 states and 1243 transitions. [2020-09-25 06:47:20,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:47:20,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1243 transitions. [2020-09-25 06:47:20,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 06:47:20,864 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:20,864 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:47:20,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:47:20,865 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:20,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:20,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1359580747, now seen corresponding path program 1 times [2020-09-25 06:47:20,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:20,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044768243] [2020-09-25 06:47:20,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:20,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:21,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:21,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:21,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:21,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:22,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:22,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:23,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:25,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:25,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 06:47:25,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:47:25,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4365 [2020-09-25 06:47:25,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:25,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:25,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:47:25,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 06:47:25,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 06:47:25,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:25,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:25,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:25,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:25,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:25,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:25,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:25,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:47:25,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:25,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:25,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:25,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:25,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:25,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:25,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:25,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:25,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:25,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:47:25,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:25,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 06:47:25,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:25,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:25,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:47:25,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:25,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:47:25,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:25,610 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 57 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:47:25,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044768243] [2020-09-25 06:47:25,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:25,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 06:47:25,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368446005] [2020-09-25 06:47:25,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:47:25,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:25,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:47:25,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:47:25,614 INFO L87 Difference]: Start difference. First operand 1040 states and 1243 transitions. Second operand 6 states. [2020-09-25 06:47:28,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:28,504 INFO L93 Difference]: Finished difference Result 2916 states and 3683 transitions. [2020-09-25 06:47:28,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:47:28,506 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 163 [2020-09-25 06:47:28,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:28,521 INFO L225 Difference]: With dead ends: 2916 [2020-09-25 06:47:28,522 INFO L226 Difference]: Without dead ends: 2041 [2020-09-25 06:47:28,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:47:28,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2041 states. [2020-09-25 06:47:28,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2041 to 1682. [2020-09-25 06:47:28,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1682 states. [2020-09-25 06:47:28,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 2132 transitions. [2020-09-25 06:47:28,618 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 2132 transitions. Word has length 163 [2020-09-25 06:47:28,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:28,622 INFO L479 AbstractCegarLoop]: Abstraction has 1682 states and 2132 transitions. [2020-09-25 06:47:28,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:47:28,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 2132 transitions. [2020-09-25 06:47:28,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 06:47:28,629 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:28,630 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:47:28,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:47:28,631 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:28,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:28,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1258573969, now seen corresponding path program 1 times [2020-09-25 06:47:28,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:28,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072090579] [2020-09-25 06:47:28,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:28,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:28,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:28,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:29,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:29,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:30,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:30,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 06:47:30,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:47:30,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1686 [2020-09-25 06:47:30,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:30,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:30,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:47:30,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 06:47:30,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 06:47:30,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:30,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:30,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:30,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:30,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:30,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:30,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:47:30,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:30,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:30,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:30,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:30,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:47:30,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:47:30,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:30,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:30,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:30,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 06:47:30,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:30,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-09-25 06:47:30,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:30,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:30,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:30,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:30,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 06:47:30,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:30,790 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:47:30,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072090579] [2020-09-25 06:47:30,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:47:30,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:47:30,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730637317] [2020-09-25 06:47:30,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:47:30,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:30,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:47:30,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:47:30,794 INFO L87 Difference]: Start difference. First operand 1682 states and 2132 transitions. Second operand 7 states. [2020-09-25 06:47:33,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:33,294 INFO L93 Difference]: Finished difference Result 4483 states and 6852 transitions. [2020-09-25 06:47:33,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:47:33,295 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 179 [2020-09-25 06:47:33,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:33,322 INFO L225 Difference]: With dead ends: 4483 [2020-09-25 06:47:33,323 INFO L226 Difference]: Without dead ends: 2966 [2020-09-25 06:47:33,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:47:33,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-09-25 06:47:33,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 2632. [2020-09-25 06:47:33,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2632 states. [2020-09-25 06:47:33,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2632 states to 2632 states and 3461 transitions. [2020-09-25 06:47:33,466 INFO L78 Accepts]: Start accepts. Automaton has 2632 states and 3461 transitions. Word has length 179 [2020-09-25 06:47:33,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:33,467 INFO L479 AbstractCegarLoop]: Abstraction has 2632 states and 3461 transitions. [2020-09-25 06:47:33,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:47:33,467 INFO L276 IsEmpty]: Start isEmpty. Operand 2632 states and 3461 transitions. [2020-09-25 06:47:33,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-09-25 06:47:33,474 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:33,474 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 06:47:33,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:47:33,475 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:33,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:33,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1134175534, now seen corresponding path program 1 times [2020-09-25 06:47:33,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:33,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803588353] [2020-09-25 06:47:33,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:33,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:33,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:33,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:33,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:34,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:34,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:34,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:34,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:38,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:38,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-09-25 06:47:38,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:47:38,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 06:47:38,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:38,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:38,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:38,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 06:47:38,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 06:47:38,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:38,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:38,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:38,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:38,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:38,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:38,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:47:38,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:38,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:38,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:38,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:38,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:38,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:47:38,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:38,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:38,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:38,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:38,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:47:38,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:38,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 06:47:38,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:38,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:38,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:38,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:38,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 06:47:38,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:38,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 06:47:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:38,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:38,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:38,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 06:47:38,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:38,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-25 06:47:38,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:38,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:38,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:38,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:38,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 06:47:38,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:39,032 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:47:39,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803588353] [2020-09-25 06:47:39,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:39,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:47:39,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102245877] [2020-09-25 06:47:39,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:47:39,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:39,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:47:39,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:47:39,035 INFO L87 Difference]: Start difference. First operand 2632 states and 3461 transitions. Second operand 7 states. [2020-09-25 06:47:41,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:41,359 INFO L93 Difference]: Finished difference Result 5927 states and 8127 transitions. [2020-09-25 06:47:41,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:47:41,365 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 246 [2020-09-25 06:47:41,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:41,379 INFO L225 Difference]: With dead ends: 5927 [2020-09-25 06:47:41,379 INFO L226 Difference]: Without dead ends: 2656 [2020-09-25 06:47:41,391 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 06:47:41,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2656 states. [2020-09-25 06:47:41,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2656 to 2584. [2020-09-25 06:47:41,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2584 states. [2020-09-25 06:47:41,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2584 states to 2584 states and 3302 transitions. [2020-09-25 06:47:41,474 INFO L78 Accepts]: Start accepts. Automaton has 2584 states and 3302 transitions. Word has length 246 [2020-09-25 06:47:41,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:41,474 INFO L479 AbstractCegarLoop]: Abstraction has 2584 states and 3302 transitions. [2020-09-25 06:47:41,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:47:41,474 INFO L276 IsEmpty]: Start isEmpty. Operand 2584 states and 3302 transitions. [2020-09-25 06:47:41,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-09-25 06:47:41,480 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:41,481 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 06:47:41,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:47:41,481 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:41,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:41,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1944800713, now seen corresponding path program 1 times [2020-09-25 06:47:41,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:41,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000238043] [2020-09-25 06:47:41,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:41,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:41,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:41,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:42,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:42,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:46,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:46,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:46,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:46,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-09-25 06:47:46,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:47:46,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 06:47:46,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:46,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:46,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:47:46,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 06:47:46,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 06:47:46,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:47:46,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:46,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:46,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:46,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:46,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:46,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:47:46,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:46,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:46,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:46,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:46,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:46,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:46,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:46,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:46,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:46,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 06:47:46,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:46,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 06:47:46,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:46,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:46,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:47:46,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:46,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 06:47:46,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:47:46,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 06:47:46,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:46,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:46,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:46,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 06:47:46,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:46,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-25 06:47:46,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:46,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:46,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:46,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:46,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 06:47:46,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:47:47,002 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:47:47,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000238043] [2020-09-25 06:47:47,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:47,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:47:47,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227054908] [2020-09-25 06:47:47,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:47:47,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:47,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:47:47,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:47:47,005 INFO L87 Difference]: Start difference. First operand 2584 states and 3302 transitions. Second operand 8 states. [2020-09-25 06:47:50,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:50,213 INFO L93 Difference]: Finished difference Result 6313 states and 8389 transitions. [2020-09-25 06:47:50,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 06:47:50,214 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 261 [2020-09-25 06:47:50,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:50,231 INFO L225 Difference]: With dead ends: 6313 [2020-09-25 06:47:50,231 INFO L226 Difference]: Without dead ends: 3894 [2020-09-25 06:47:50,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-09-25 06:47:50,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3894 states. [2020-09-25 06:47:50,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3894 to 3695. [2020-09-25 06:47:50,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3695 states. [2020-09-25 06:47:50,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3695 states to 3695 states and 4785 transitions. [2020-09-25 06:47:50,335 INFO L78 Accepts]: Start accepts. Automaton has 3695 states and 4785 transitions. Word has length 261 [2020-09-25 06:47:50,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:50,336 INFO L479 AbstractCegarLoop]: Abstraction has 3695 states and 4785 transitions. [2020-09-25 06:47:50,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:47:50,336 INFO L276 IsEmpty]: Start isEmpty. Operand 3695 states and 4785 transitions. [2020-09-25 06:47:50,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-09-25 06:47:50,343 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:50,344 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 06:47:50,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:47:50,344 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:50,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:50,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1709165424, now seen corresponding path program 1 times [2020-09-25 06:47:50,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:50,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855779972] [2020-09-25 06:47:50,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:50,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:50,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:50,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:51,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking...