/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_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:47:02,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:47:02,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:47:02,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:47:02,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:47:02,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:47:02,571 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:47:02,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:47:02,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:47:02,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:47:02,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:47:02,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:47:02,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:47:02,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:47:02,580 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:47:02,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:47:02,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:47:02,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:47:02,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:47:02,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:47:02,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:47:02,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:47:02,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:47:02,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:47:02,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:47:02,609 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:47:02,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:47:02,611 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:47:02,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:47:02,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:47:02,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:47:02,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:47:02,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:47:02,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:47:02,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:47:02,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:47:02,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:47:02,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:47:02,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:47:02,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:47:02,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:47:02,622 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 06:47:02,646 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:47:02,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:47:02,648 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:47:02,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:47:02,648 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:47:02,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:47:02,649 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:47:02,649 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:47:02,649 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:47:02,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:47:02,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:47:02,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:47:02,650 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:47:02,650 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:47:02,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:47:02,650 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:47:02,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:47:02,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:47:02,651 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:47:02,651 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:47:02,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:47:02,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:47:02,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:47:02,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:47:02,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:47:02,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:47:02,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:47:02,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:47:02,653 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:47:02,653 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 06:47:03,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:47:03,127 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:47:03,131 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:47:03,133 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:47:03,134 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:47:03,135 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label10.c [2020-09-25 06:47:03,218 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f94ac9c11/45630a9722d9420b9bd1b84aaab7f961/FLAGed47066cd [2020-09-25 06:47:03,862 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:47:03,863 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label10.c [2020-09-25 06:47:03,880 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f94ac9c11/45630a9722d9420b9bd1b84aaab7f961/FLAGed47066cd [2020-09-25 06:47:04,102 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f94ac9c11/45630a9722d9420b9bd1b84aaab7f961 [2020-09-25 06:47:04,116 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:47:04,123 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:47:04,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:47:04,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:47:04,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:47:04,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:47:04" (1/1) ... [2020-09-25 06:47:04,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e9c0889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:04, skipping insertion in model container [2020-09-25 06:47:04,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:47:04" (1/1) ... [2020-09-25 06:47:04,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:47:04,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:47:04,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:47:04,782 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:47:04,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:47:04,931 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:47:04,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:04 WrapperNode [2020-09-25 06:47:04,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:47:04,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:47:04,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:47:04,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:47:04,948 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:04" (1/1) ... [2020-09-25 06:47:04,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:04" (1/1) ... [2020-09-25 06:47:04,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:04" (1/1) ... [2020-09-25 06:47:04,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:04" (1/1) ... [2020-09-25 06:47:05,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:04" (1/1) ... [2020-09-25 06:47:05,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:04" (1/1) ... [2020-09-25 06:47:05,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:04" (1/1) ... [2020-09-25 06:47:05,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:47:05,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:47:05,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:47:05,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:47:05,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:04" (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 06:47:05,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:47:05,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:47:05,123 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:47:05,123 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:47:05,123 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:47:05,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:47:05,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:47:05,124 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:47:05,124 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:47:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:47:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:47:06,505 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:47:06,505 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:47:06,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:47:06 BoogieIcfgContainer [2020-09-25 06:47:06,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:47:06,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:47:06,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:47:06,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:47:06,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:47:04" (1/3) ... [2020-09-25 06:47:06,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3273e701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:47:06, skipping insertion in model container [2020-09-25 06:47:06,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:04" (2/3) ... [2020-09-25 06:47:06,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3273e701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:47:06, skipping insertion in model container [2020-09-25 06:47:06,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:47:06" (3/3) ... [2020-09-25 06:47:06,524 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label10.c [2020-09-25 06:47:06,536 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:47:06,547 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:47:06,569 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:47:06,602 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:47:06,602 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:47:06,603 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:47:06,603 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:47:06,603 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:47:06,603 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:47:06,603 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:47:06,603 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:47:06,634 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 06:47:06,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 06:47:06,646 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:06,647 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] [2020-09-25 06:47:06,648 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:06,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:06,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1834886135, now seen corresponding path program 1 times [2020-09-25 06:47:06,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:06,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604999381] [2020-09-25 06:47:06,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:06,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:06,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:07,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:07,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:07,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:07,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 06:47:07,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:47:07,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 604 [2020-09-25 06:47:07,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:07,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:07,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:47:07,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:47:07,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 06:47:07,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:47:07,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:07,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:07,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:07,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:07,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:07,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:07,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 06:47:07,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:07,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:07,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:07,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:07,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:47:07,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 27 [2020-09-25 06:47:07,697 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 06:47:07,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604999381] [2020-09-25 06:47:07,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:47:07,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:47:07,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785122167] [2020-09-25 06:47:07,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:47:07,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:07,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:47:07,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:47:07,729 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 06:47:09,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:09,681 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 06:47:09,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:47:09,688 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-09-25 06:47:09,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:09,711 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 06:47:09,711 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 06:47:09,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 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 06:47:09,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 06:47:09,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 06:47:09,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 06:47:09,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 06:47:09,817 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 67 [2020-09-25 06:47:09,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:09,817 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 06:47:09,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:47:09,818 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 06:47:09,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 06:47:09,826 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:09,827 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:47:09,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:47:09,827 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:09,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:09,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1798381656, now seen corresponding path program 1 times [2020-09-25 06:47:09,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:09,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171341213] [2020-09-25 06:47:09,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:09,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:09,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:10,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:10,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:10,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:10,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:11,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:14,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:14,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 06:47:14,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:47:14,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:47:14,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:14,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:14,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:14,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 06:47:14,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 06:47:14,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:15,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:15,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:15,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:15,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:15,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:15,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:47:15,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:15,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:15,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:15,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:15,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:15,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:15,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:15,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:15,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:15,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:15,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 06:47:15,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:15,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 06:47:15,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:15,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:15,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:15,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:15,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 06:47:15,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:15,292 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:47:15,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171341213] [2020-09-25 06:47:15,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:15,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 06:47:15,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642851404] [2020-09-25 06:47:15,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:47:15,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:15,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:47:15,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:47:15,297 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 6 states. [2020-09-25 06:47:17,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:17,563 INFO L93 Difference]: Finished difference Result 850 states and 1122 transitions. [2020-09-25 06:47:17,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:47:17,563 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2020-09-25 06:47:17,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:17,570 INFO L225 Difference]: With dead ends: 850 [2020-09-25 06:47:17,570 INFO L226 Difference]: Without dead ends: 848 [2020-09-25 06:47:17,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:47:17,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2020-09-25 06:47:17,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 848. [2020-09-25 06:47:17,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 848 states. [2020-09-25 06:47:17,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1119 transitions. [2020-09-25 06:47:17,629 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1119 transitions. Word has length 146 [2020-09-25 06:47:17,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:17,631 INFO L479 AbstractCegarLoop]: Abstraction has 848 states and 1119 transitions. [2020-09-25 06:47:17,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:47:17,631 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1119 transitions. [2020-09-25 06:47:17,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-25 06:47:17,650 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:17,651 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:47:17,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:47:17,651 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:17,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:17,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1814743407, now seen corresponding path program 1 times [2020-09-25 06:47:17,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:17,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654353255] [2020-09-25 06:47:17,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:17,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:17,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:18,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:18,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:20,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:22,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:22,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 06:47:22,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:47:22,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 06:47:22,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:22,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:22,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:47:22,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 06:47:22,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 06:47:22,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:22,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:22,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:22,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:22,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:22,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:22,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:22,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 06:47:22,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:22,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:22,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:22,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:22,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:47:22,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:22,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:22,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:23,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:23,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 06:47:23,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:23,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-09-25 06:47:23,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:23,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:23,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:23,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:23,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 06:47:23,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:23,228 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:47:23,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654353255] [2020-09-25 06:47:23,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:47:23,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:47:23,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654214819] [2020-09-25 06:47:23,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:47:23,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:23,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:47:23,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:47:23,232 INFO L87 Difference]: Start difference. First operand 848 states and 1119 transitions. Second operand 7 states. [2020-09-25 06:47:25,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:25,518 INFO L93 Difference]: Finished difference Result 1852 states and 2501 transitions. [2020-09-25 06:47:25,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:47:25,519 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2020-09-25 06:47:25,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:25,525 INFO L225 Difference]: With dead ends: 1852 [2020-09-25 06:47:25,525 INFO L226 Difference]: Without dead ends: 1019 [2020-09-25 06:47:25,529 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 06:47:25,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2020-09-25 06:47:25,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 1005. [2020-09-25 06:47:25,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1005 states. [2020-09-25 06:47:25,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1273 transitions. [2020-09-25 06:47:25,564 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1273 transitions. Word has length 203 [2020-09-25 06:47:25,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:25,565 INFO L479 AbstractCegarLoop]: Abstraction has 1005 states and 1273 transitions. [2020-09-25 06:47:25,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:47:25,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1273 transitions. [2020-09-25 06:47:25,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-09-25 06:47:25,571 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:25,571 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:47:25,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:47:25,572 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:25,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:25,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1197577330, now seen corresponding path program 1 times [2020-09-25 06:47:25,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:25,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [156137980] [2020-09-25 06:47:25,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:25,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:25,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:26,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:26,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:29,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:30,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:30,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:30,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-09-25 06:47:30,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:47:30,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 06:47:30,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:30,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:30,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:30,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 06:47:30,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 06:47:30,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:30,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:30,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:30,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:30,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:30,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:30,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:30,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:47:30,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:30,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:30,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:30,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:30,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:30,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:30,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:30,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:30,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:30,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:30,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 06:47:30,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:30,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 06:47:30,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:30,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:30,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:30,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:30,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 06:47:30,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:30,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 06:47:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:30,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:31,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:31,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 06:47:31,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:31,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-09-25 06:47:31,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:31,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:31,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:31,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:31,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 06:47:31,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:31,463 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:47:31,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [156137980] [2020-09-25 06:47:31,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:31,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:47:31,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473640370] [2020-09-25 06:47:31,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:47:31,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:31,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:47:31,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:47:31,467 INFO L87 Difference]: Start difference. First operand 1005 states and 1273 transitions. Second operand 7 states. [2020-09-25 06:47:33,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:33,790 INFO L93 Difference]: Finished difference Result 2275 states and 3063 transitions. [2020-09-25 06:47:33,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:47:33,791 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 275 [2020-09-25 06:47:33,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:33,801 INFO L225 Difference]: With dead ends: 2275 [2020-09-25 06:47:33,802 INFO L226 Difference]: Without dead ends: 1435 [2020-09-25 06:47:33,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:47:33,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1435 states. [2020-09-25 06:47:33,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1435 to 1013. [2020-09-25 06:47:33,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1013 states. [2020-09-25 06:47:33,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1247 transitions. [2020-09-25 06:47:33,853 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1247 transitions. Word has length 275 [2020-09-25 06:47:33,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:33,854 INFO L479 AbstractCegarLoop]: Abstraction has 1013 states and 1247 transitions. [2020-09-25 06:47:33,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:47:33,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1247 transitions. [2020-09-25 06:47:33,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-09-25 06:47:33,860 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:33,861 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, 2, 2, 2, 2, 2, 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] [2020-09-25 06:47:33,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:47:33,861 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:33,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:33,862 INFO L82 PathProgramCache]: Analyzing trace with hash 467338268, now seen corresponding path program 1 times [2020-09-25 06:47:33,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:33,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304904011] [2020-09-25 06:47:33,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:33,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:33,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:34,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:34,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:35,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:35,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:36,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:38,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:38,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-09-25 06:47:38,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:47:38,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-09-25 06:47:38,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:38,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:38,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:38,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-09-25 06:47:38,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 06:47:38,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:39,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:39,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:39,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:39,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:39,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:39,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:39,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:47:39,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:39,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:39,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:39,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:39,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:39,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:39,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:39,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:39,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:39,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:39,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 06:47:39,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:39,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 06:47:39,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:39,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:39,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:39,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:39,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 06:47:39,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:39,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 06:47:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:39,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:39,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:39,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 06:47:39,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:39,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-09-25 06:47:39,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:39,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:39,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:39,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:39,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 06:47:39,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:40,294 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:47:40,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304904011] [2020-09-25 06:47:40,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:40,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:47:40,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228968693] [2020-09-25 06:47:40,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:47:40,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:40,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:47:40,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:47:40,298 INFO L87 Difference]: Start difference. First operand 1013 states and 1247 transitions. Second operand 8 states. [2020-09-25 06:47:43,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:43,065 INFO L93 Difference]: Finished difference Result 2519 states and 3260 transitions. [2020-09-25 06:47:43,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 06:47:43,066 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 279 [2020-09-25 06:47:43,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:43,072 INFO L225 Difference]: With dead ends: 2519 [2020-09-25 06:47:43,072 INFO L226 Difference]: Without dead ends: 1671 [2020-09-25 06:47:43,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-09-25 06:47:43,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1671 states. [2020-09-25 06:47:43,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1671 to 1481. [2020-09-25 06:47:43,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1481 states. [2020-09-25 06:47:43,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 1760 transitions. [2020-09-25 06:47:43,121 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 1760 transitions. Word has length 279 [2020-09-25 06:47:43,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:43,122 INFO L479 AbstractCegarLoop]: Abstraction has 1481 states and 1760 transitions. [2020-09-25 06:47:43,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:47:43,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 1760 transitions. [2020-09-25 06:47:43,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-09-25 06:47:43,131 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:43,131 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:47:43,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:47:43,132 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:43,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:43,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1512672608, now seen corresponding path program 1 times [2020-09-25 06:47:43,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:43,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114836090] [2020-09-25 06:47:43,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:43,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:43,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:43,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:43,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:43,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:45,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:45,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:48,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:48,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 386 [2020-09-25 06:47:48,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:47:48,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 06:47:48,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:48,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:48,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:48,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 06:47:48,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 06:47:48,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:48,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:48,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:48,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:48,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:48,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:48,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:47:48,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:48,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:48,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:48,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:48,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:48,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:47:48,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:48,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:48,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:48,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:47:48,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:48,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 06:47:48,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:48,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:48,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:48,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:48,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 06:47:48,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:47:48,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 06:47:48,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:48,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:48,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:48,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 06:47:48,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:48,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 06:47:48,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:48,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:48,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:48,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:48,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:47:48,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:47:48,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-09-25 06:47:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:48,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:48,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:48,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 06:47:48,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:48,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 06:47:48,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:48,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:48,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:48,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-25 06:47:48,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:48,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:47:48,642 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 238 proven. 71 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-09-25 06:47:48,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114836090] [2020-09-25 06:47:48,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:48,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:47:48,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471562045] [2020-09-25 06:47:48,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:47:48,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:48,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:47:48,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:47:48,645 INFO L87 Difference]: Start difference. First operand 1481 states and 1760 transitions. Second operand 7 states.