/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:38:51,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:38:51,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:38:51,512 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:38:51,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:38:51,513 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:38:51,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:38:51,517 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:38:51,519 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:38:51,520 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:38:51,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:38:51,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:38:51,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:38:51,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:38:51,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:38:51,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:38:51,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:38:51,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:38:51,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:38:51,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:38:51,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:38:51,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:38:51,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:38:51,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:38:51,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:38:51,542 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:38:51,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:38:51,543 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:38:51,544 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:38:51,545 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:38:51,545 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:38:51,546 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:38:51,547 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:38:51,548 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:38:51,549 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:38:51,550 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:38:51,551 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:38:51,551 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:38:51,551 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:38:51,552 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:38:51,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:38:51,557 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 05:38:51,611 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:38:51,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:38:51,614 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:38:51,614 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:38:51,614 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:38:51,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:38:51,614 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:38:51,615 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:38:51,615 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:38:51,615 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:38:51,615 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:38:51,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:38:51,616 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:38:51,617 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:38:51,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:38:51,617 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:38:51,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:38:51,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:38:51,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:38:51,618 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:38:51,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:38:51,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:38:51,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:38:51,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:38:51,619 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:38:51,619 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:38:51,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:38:51,620 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:38:51,621 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:38:51,621 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 05:38:52,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:38:52,138 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:38:52,142 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:38:52,144 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:38:52,144 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:38:52,146 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label34.c [2020-09-25 05:38:52,230 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44d8fc472/9edd738445e84519a38631829128ca84/FLAG4e4af31ef [2020-09-25 05:38:52,966 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:38:52,967 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label34.c [2020-09-25 05:38:53,000 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44d8fc472/9edd738445e84519a38631829128ca84/FLAG4e4af31ef [2020-09-25 05:38:53,132 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44d8fc472/9edd738445e84519a38631829128ca84 [2020-09-25 05:38:53,148 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:38:53,155 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:38:53,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:38:53,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:38:53,167 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:38:53,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:38:53" (1/1) ... [2020-09-25 05:38:53,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23a73c84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:53, skipping insertion in model container [2020-09-25 05:38:53,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:38:53" (1/1) ... [2020-09-25 05:38:53,186 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:38:53,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:38:53,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:38:53,806 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:38:53,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:38:53,911 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:38:53,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:53 WrapperNode [2020-09-25 05:38:53,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:38:53,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:38:53,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:38:53,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:38:53,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:53" (1/1) ... [2020-09-25 05:38:53,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:53" (1/1) ... [2020-09-25 05:38:53,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:53" (1/1) ... [2020-09-25 05:38:53,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:53" (1/1) ... [2020-09-25 05:38:53,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:53" (1/1) ... [2020-09-25 05:38:54,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:53" (1/1) ... [2020-09-25 05:38:54,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:53" (1/1) ... [2020-09-25 05:38:54,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:38:54,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:38:54,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:38:54,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:38:54,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:53" (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 05:38:54,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:38:54,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:38:54,124 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:38:54,124 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:38:54,125 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:38:54,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:38:54,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:38:54,125 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:38:54,125 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:38:54,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:38:54,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:38:55,691 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:38:55,691 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:38:55,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:38:55 BoogieIcfgContainer [2020-09-25 05:38:55,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:38:55,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:38:55,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:38:55,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:38:55,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:38:53" (1/3) ... [2020-09-25 05:38:55,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef8dbc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:38:55, skipping insertion in model container [2020-09-25 05:38:55,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:38:53" (2/3) ... [2020-09-25 05:38:55,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef8dbc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:38:55, skipping insertion in model container [2020-09-25 05:38:55,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:38:55" (3/3) ... [2020-09-25 05:38:55,711 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label34.c [2020-09-25 05:38:55,723 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:38:55,741 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:38:55,764 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:38:55,814 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:38:55,815 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:38:55,815 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:38:55,815 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:38:55,816 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:38:55,816 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:38:55,816 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:38:55,816 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:38:55,861 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 05:38:55,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-25 05:38:55,874 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:55,875 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] [2020-09-25 05:38:55,876 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:55,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:55,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1489035705, now seen corresponding path program 1 times [2020-09-25 05:38:55,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:55,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042176206] [2020-09-25 05:38:55,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:56,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:56,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:56,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:56,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:57,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:57,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 05:38:57,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:38:57,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1218 [2020-09-25 05:38:57,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:57,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:57,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:38:57,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:38:57,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 05:38:57,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:38:57,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:57,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:57,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:57,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:57,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:57,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:57,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 05:38:57,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:57,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:57,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:57,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:57,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:38:57,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:38:57,592 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 05:38:57,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042176206] [2020-09-25 05:38:57,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:38:57,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:38:57,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248091198] [2020-09-25 05:38:57,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:38:57,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:57,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:38:57,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:38:57,627 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 05:38:59,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:59,758 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-25 05:38:59,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:38:59,761 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-09-25 05:38:59,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:59,786 INFO L225 Difference]: With dead ends: 1160 [2020-09-25 05:38:59,786 INFO L226 Difference]: Without dead ends: 631 [2020-09-25 05:38:59,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:38:59,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-25 05:38:59,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-25 05:38:59,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-25 05:38:59,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-25 05:38:59,912 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 82 [2020-09-25 05:38:59,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:59,913 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-25 05:38:59,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:38:59,914 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-25 05:38:59,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 05:38:59,926 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:59,927 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:38:59,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:38:59,928 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:59,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:59,928 INFO L82 PathProgramCache]: Analyzing trace with hash -942957376, now seen corresponding path program 1 times [2020-09-25 05:38:59,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:59,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212167943] [2020-09-25 05:38:59,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:00,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:00,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:00,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:01,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:01,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:02,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:04,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:04,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 05:39:04,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:39:04,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 05:39:04,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:04,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:04,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:39:04,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 05:39:04,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 05:39:04,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 05:39:05,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:05,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:05,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:05,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:05,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:05,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:05,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 05:39:05,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:05,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:05,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:39:05,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:05,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 05:39:05,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:05,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:05,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:05,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:05,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:05,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 05:39:05,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:39:05,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-09-25 05:39:05,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:05,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:05,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:39:05,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:05,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 05:39:05,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:05,901 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 65 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:05,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212167943] [2020-09-25 05:39:05,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:05,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 05:39:05,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824755710] [2020-09-25 05:39:05,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 05:39:05,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:05,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 05:39:05,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 05:39:05,907 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 10 states. [2020-09-25 05:39:09,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:09,601 INFO L93 Difference]: Finished difference Result 1663 states and 2149 transitions. [2020-09-25 05:39:09,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 05:39:09,602 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 165 [2020-09-25 05:39:09,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:09,609 INFO L225 Difference]: With dead ends: 1663 [2020-09-25 05:39:09,609 INFO L226 Difference]: Without dead ends: 1083 [2020-09-25 05:39:09,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 05:39:09,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2020-09-25 05:39:09,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1032. [2020-09-25 05:39:09,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2020-09-25 05:39:09,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1253 transitions. [2020-09-25 05:39:09,663 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1253 transitions. Word has length 165 [2020-09-25 05:39:09,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:09,664 INFO L479 AbstractCegarLoop]: Abstraction has 1032 states and 1253 transitions. [2020-09-25 05:39:09,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 05:39:09,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1253 transitions. [2020-09-25 05:39:09,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 05:39:09,670 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:09,670 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:39:09,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:39:09,671 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:09,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:09,671 INFO L82 PathProgramCache]: Analyzing trace with hash 782475013, now seen corresponding path program 1 times [2020-09-25 05:39:09,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:09,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944274222] [2020-09-25 05:39:09,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:09,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:09,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:09,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:10,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:10,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:11,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:11,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:12,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:12,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 05:39:12,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:39:12,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2557 [2020-09-25 05:39:12,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:12,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:12,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:12,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-25 05:39:12,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 05:39:12,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:12,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:12,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:12,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:12,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:12,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:12,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:39:12,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:12,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:12,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:12,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:12,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:12,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:12,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:12,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:12,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:12,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 05:39:12,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:12,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 05:39:12,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:12,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:12,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:12,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:12,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 05:39:12,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:12,546 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 65 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:12,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944274222] [2020-09-25 05:39:12,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:12,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:39:12,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104728222] [2020-09-25 05:39:12,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:39:12,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:12,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:39:12,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:12,550 INFO L87 Difference]: Start difference. First operand 1032 states and 1253 transitions. Second operand 5 states. [2020-09-25 05:39:14,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:14,004 INFO L93 Difference]: Finished difference Result 2819 states and 3537 transitions. [2020-09-25 05:39:14,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:39:14,005 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-09-25 05:39:14,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:14,017 INFO L225 Difference]: With dead ends: 2819 [2020-09-25 05:39:14,017 INFO L226 Difference]: Without dead ends: 1802 [2020-09-25 05:39:14,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:39:14,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2020-09-25 05:39:14,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1642. [2020-09-25 05:39:14,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1642 states. [2020-09-25 05:39:14,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 2038 transitions. [2020-09-25 05:39:14,076 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 2038 transitions. Word has length 165 [2020-09-25 05:39:14,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:14,077 INFO L479 AbstractCegarLoop]: Abstraction has 1642 states and 2038 transitions. [2020-09-25 05:39:14,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:39:14,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 2038 transitions. [2020-09-25 05:39:14,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 05:39:14,081 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:14,081 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, 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] [2020-09-25 05:39:14,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:39:14,082 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:14,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:14,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1039213483, now seen corresponding path program 1 times [2020-09-25 05:39:14,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:14,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464698479] [2020-09-25 05:39:14,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:14,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:14,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:14,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:14,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:14,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:16,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:17,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:17,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:19,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:19,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 05:39:19,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:39:19,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:39:19,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:19,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:19,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:19,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 05:39:19,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 05:39:19,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:19,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:19,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:19,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:19,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:19,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:19,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:19,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:39:19,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:19,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:19,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:19,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:19,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:19,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:19,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:19,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:19,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:19,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:39:19,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:19,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-09-25 05:39:19,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:19,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:19,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:19,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:19,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 05:39:19,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:19,527 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 65 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:19,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464698479] [2020-09-25 05:39:19,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:19,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:39:19,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301383654] [2020-09-25 05:39:19,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:39:19,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:19,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:39:19,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:19,535 INFO L87 Difference]: Start difference. First operand 1642 states and 2038 transitions. Second operand 5 states. [2020-09-25 05:39:21,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:21,819 INFO L93 Difference]: Finished difference Result 4209 states and 5421 transitions. [2020-09-25 05:39:21,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:39:21,820 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-09-25 05:39:21,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:21,848 INFO L225 Difference]: With dead ends: 4209 [2020-09-25 05:39:21,848 INFO L226 Difference]: Without dead ends: 2582 [2020-09-25 05:39:21,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:39:21,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2582 states. [2020-09-25 05:39:21,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2582 to 2554. [2020-09-25 05:39:21,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2554 states. [2020-09-25 05:39:21,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2554 states to 2554 states and 3128 transitions. [2020-09-25 05:39:21,994 INFO L78 Accepts]: Start accepts. Automaton has 2554 states and 3128 transitions. Word has length 171 [2020-09-25 05:39:21,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:21,996 INFO L479 AbstractCegarLoop]: Abstraction has 2554 states and 3128 transitions. [2020-09-25 05:39:21,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:39:21,997 INFO L276 IsEmpty]: Start isEmpty. Operand 2554 states and 3128 transitions. [2020-09-25 05:39:22,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 05:39:22,004 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:22,005 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, 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] [2020-09-25 05:39:22,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:39:22,005 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:22,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:22,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1276415705, now seen corresponding path program 1 times [2020-09-25 05:39:22,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:22,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252341695] [2020-09-25 05:39:22,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:22,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:22,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:22,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:22,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:24,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:26,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:26,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:26,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:26,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:26,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:27,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:27,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-25 05:39:27,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:39:27,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 05:39:27,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:27,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:27,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:39:27,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-09-25 05:39:27,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 05:39:27,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:39:27,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:27,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:27,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:27,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:27,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:27,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:27,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:39:27,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:27,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:27,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:27,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:27,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:27,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:27,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:27,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:27,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:27,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 05:39:27,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:27,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 05:39:27,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:27,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:27,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:39:27,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:27,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 05:39:27,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:39:27,501 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 65 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:27,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252341695] [2020-09-25 05:39:27,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:27,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:39:27,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081700655] [2020-09-25 05:39:27,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:39:27,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:27,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:39:27,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:39:27,505 INFO L87 Difference]: Start difference. First operand 2554 states and 3128 transitions. Second operand 6 states. [2020-09-25 05:39:29,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:29,974 INFO L93 Difference]: Finished difference Result 5914 states and 7437 transitions. [2020-09-25 05:39:29,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:39:29,975 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 190 [2020-09-25 05:39:29,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:29,994 INFO L225 Difference]: With dead ends: 5914 [2020-09-25 05:39:29,995 INFO L226 Difference]: Without dead ends: 3375 [2020-09-25 05:39:30,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:39:30,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3375 states. [2020-09-25 05:39:30,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3375 to 3167. [2020-09-25 05:39:30,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3167 states. [2020-09-25 05:39:30,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3167 states to 3167 states and 3966 transitions. [2020-09-25 05:39:30,091 INFO L78 Accepts]: Start accepts. Automaton has 3167 states and 3966 transitions. Word has length 190 [2020-09-25 05:39:30,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:30,091 INFO L479 AbstractCegarLoop]: Abstraction has 3167 states and 3966 transitions. [2020-09-25 05:39:30,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:39:30,092 INFO L276 IsEmpty]: Start isEmpty. Operand 3167 states and 3966 transitions. [2020-09-25 05:39:30,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-25 05:39:30,097 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:30,097 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, 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] [2020-09-25 05:39:30,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:39:30,098 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:30,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:30,098 INFO L82 PathProgramCache]: Analyzing trace with hash -451059465, now seen corresponding path program 1 times [2020-09-25 05:39:30,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:30,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184555874] [2020-09-25 05:39:30,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:30,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:30,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:30,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:33,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:33,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:33,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:34,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:35,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:35,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-09-25 05:39:35,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:39:35,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:39:35,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:35,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:35,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:35,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-09-25 05:39:35,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 05:39:35,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:39:35,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:35,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:35,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:35,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:35,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:35,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:35,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:39:35,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:35,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:35,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:35,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:35,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:35,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:35,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:35,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:35,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:35,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 05:39:35,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:35,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 05:39:35,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:35,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:35,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:35,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:35,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 05:39:35,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:35,503 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 65 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:35,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184555874] [2020-09-25 05:39:35,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:35,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:39:35,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099560793] [2020-09-25 05:39:35,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:39:35,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:35,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:39:35,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:35,507 INFO L87 Difference]: Start difference. First operand 3167 states and 3966 transitions. Second operand 5 states. [2020-09-25 05:39:37,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:37,496 INFO L93 Difference]: Finished difference Result 7247 states and 9336 transitions. [2020-09-25 05:39:37,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:39:37,496 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2020-09-25 05:39:37,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:37,519 INFO L225 Difference]: With dead ends: 7247 [2020-09-25 05:39:37,519 INFO L226 Difference]: Without dead ends: 4095 [2020-09-25 05:39:37,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:39:37,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4095 states. [2020-09-25 05:39:37,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4095 to 3927. [2020-09-25 05:39:37,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3927 states. [2020-09-25 05:39:37,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3927 states to 3927 states and 4841 transitions. [2020-09-25 05:39:37,629 INFO L78 Accepts]: Start accepts. Automaton has 3927 states and 4841 transitions. Word has length 204 [2020-09-25 05:39:37,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:37,629 INFO L479 AbstractCegarLoop]: Abstraction has 3927 states and 4841 transitions. [2020-09-25 05:39:37,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:39:37,630 INFO L276 IsEmpty]: Start isEmpty. Operand 3927 states and 4841 transitions. [2020-09-25 05:39:37,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-09-25 05:39:37,641 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:37,642 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:37,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:39:37,642 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:37,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:37,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1701264456, now seen corresponding path program 1 times [2020-09-25 05:39:37,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:37,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866548018] [2020-09-25 05:39:37,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:37,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:37,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:38,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:38,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:38,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking...