/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=0.8 --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_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:57:04,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:57:04,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:57:04,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:57:04,582 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:57:04,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:57:04,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:57:04,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:57:04,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:57:04,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:57:04,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:57:04,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:57:04,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:57:04,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:57:04,614 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:57:04,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:57:04,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:57:04,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:57:04,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:57:04,628 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:57:04,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:57:04,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:57:04,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:57:04,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:57:04,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:57:04,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:57:04,640 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:57:04,643 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:57:04,644 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:57:04,646 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:57:04,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:57:04,647 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:57:04,648 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:57:04,649 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:57:04,650 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:57:04,650 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:57:04,651 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:57:04,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:57:04,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:57:04,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:57:04,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:57:04,654 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 07:57:04,680 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:57:04,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:57:04,682 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:57:04,682 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:57:04,682 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:57:04,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:57:04,683 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:57:04,683 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:57:04,683 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:57:04,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:57:04,684 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:57:04,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:57:04,684 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:57:04,684 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:57:04,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:57:04,685 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:57:04,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:57:04,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:57:04,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:57:04,686 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:57:04,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:57:04,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:57:04,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:57:04,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:57:04,687 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:57:04,687 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:57:04,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:57:04,688 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:57:04,688 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:57:04,688 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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;log-additional-information=true; [2020-09-25 07:57:05,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:57:05,200 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:57:05,207 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:57:05,210 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:57:05,212 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:57:05,213 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label40.c [2020-09-25 07:57:05,312 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91c59274f/7e84a9ce29de43739512d2d187f31524/FLAG9c822586d [2020-09-25 07:57:06,012 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:57:06,013 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label40.c [2020-09-25 07:57:06,027 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91c59274f/7e84a9ce29de43739512d2d187f31524/FLAG9c822586d [2020-09-25 07:57:06,224 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91c59274f/7e84a9ce29de43739512d2d187f31524 [2020-09-25 07:57:06,240 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:57:06,246 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:57:06,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:57:06,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:57:06,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:57:06,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:57:06" (1/1) ... [2020-09-25 07:57:06,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24a5289c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:06, skipping insertion in model container [2020-09-25 07:57:06,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:57:06" (1/1) ... [2020-09-25 07:57:06,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:57:06,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:57:06,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:57:06,865 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:57:07,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:57:07,189 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:57:07,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:07 WrapperNode [2020-09-25 07:57:07,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:57:07,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:57:07,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:57:07,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:57:07,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:07" (1/1) ... [2020-09-25 07:57:07,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:07" (1/1) ... [2020-09-25 07:57:07,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:07" (1/1) ... [2020-09-25 07:57:07,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:07" (1/1) ... [2020-09-25 07:57:07,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:07" (1/1) ... [2020-09-25 07:57:07,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:07" (1/1) ... [2020-09-25 07:57:07,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:07" (1/1) ... [2020-09-25 07:57:07,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:57:07,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:57:07,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:57:07,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:57:07,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:07" (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 07:57:07,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:57:07,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:57:07,409 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:57:07,410 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:57:07,410 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:57:07,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:57:07,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:57:07,410 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:57:07,411 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:57:07,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:57:07,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:57:08,908 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:57:08,909 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:57:08,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:57:08 BoogieIcfgContainer [2020-09-25 07:57:08,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:57:08,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:57:08,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:57:08,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:57:08,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:57:06" (1/3) ... [2020-09-25 07:57:08,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5888107c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:57:08, skipping insertion in model container [2020-09-25 07:57:08,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:07" (2/3) ... [2020-09-25 07:57:08,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5888107c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:57:08, skipping insertion in model container [2020-09-25 07:57:08,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:57:08" (3/3) ... [2020-09-25 07:57:08,930 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label40.c [2020-09-25 07:57:08,941 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:57:08,952 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:57:08,972 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:57:09,012 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:57:09,012 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:57:09,012 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:57:09,013 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:57:09,013 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:57:09,013 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:57:09,013 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:57:09,013 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:57:09,042 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 07:57:09,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-25 07:57:09,055 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:09,056 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] [2020-09-25 07:57:09,057 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:09,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:09,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1046899727, now seen corresponding path program 1 times [2020-09-25 07:57:09,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:09,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915691290] [2020-09-25 07:57:09,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:09,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:09,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:09,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:09,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 07:57:09,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:09,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 546 [2020-09-25 07:57:09,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:09,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:09,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:09,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:57:09,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 07:57:09,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 07:57:10,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:10,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:10,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:10,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:10,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:10,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 07:57:10,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:10,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:10,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:10,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:10,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:57:10,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:10,117 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 07:57:10,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915691290] [2020-09-25 07:57:10,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:57:10,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 07:57:10,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698511832] [2020-09-25 07:57:10,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:57:10,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:10,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:57:10,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:57:10,155 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 07:57:12,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:12,837 INFO L93 Difference]: Finished difference Result 1226 states and 1797 transitions. [2020-09-25 07:57:12,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 07:57:12,840 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-09-25 07:57:12,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:12,889 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 07:57:12,889 INFO L226 Difference]: Without dead ends: 707 [2020-09-25 07:57:12,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:57:12,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-25 07:57:13,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-25 07:57:13,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 07:57:13,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 926 transitions. [2020-09-25 07:57:13,060 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 926 transitions. Word has length 68 [2020-09-25 07:57:13,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:13,061 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 926 transitions. [2020-09-25 07:57:13,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:57:13,062 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 926 transitions. [2020-09-25 07:57:13,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 07:57:13,071 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:13,072 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:57:13,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:57:13,075 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:13,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:13,076 INFO L82 PathProgramCache]: Analyzing trace with hash -160289432, now seen corresponding path program 1 times [2020-09-25 07:57:13,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:13,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333399350] [2020-09-25 07:57:13,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:13,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:13,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:13,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:13,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:14,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:14,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:15,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:18,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:18,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:18,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 07:57:18,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:57:18,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 07:57:18,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:18,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:18,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:18,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:57:18,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 07:57:18,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:57:18,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:18,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:18,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:18,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:18,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:18,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:18,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 07:57:18,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:18,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:18,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:18,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:18,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:57:18,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:18,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:18,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:18,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:18,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 07:57:18,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:18,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-25 07:57:18,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:18,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:18,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:18,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:18,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 07:57:18,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:18,659 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:18,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1333399350] [2020-09-25 07:57:18,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:57:18,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:57:18,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987168974] [2020-09-25 07:57:18,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:57:18,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:18,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:57:18,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:57:18,665 INFO L87 Difference]: Start difference. First operand 695 states and 926 transitions. Second operand 7 states. [2020-09-25 07:57:20,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:20,820 INFO L93 Difference]: Finished difference Result 1574 states and 2131 transitions. [2020-09-25 07:57:20,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 07:57:20,821 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2020-09-25 07:57:20,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:20,827 INFO L225 Difference]: With dead ends: 1574 [2020-09-25 07:57:20,827 INFO L226 Difference]: Without dead ends: 894 [2020-09-25 07:57:20,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-25 07:57:20,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-09-25 07:57:20,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 852. [2020-09-25 07:57:20,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2020-09-25 07:57:20,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1127 transitions. [2020-09-25 07:57:20,872 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1127 transitions. Word has length 151 [2020-09-25 07:57:20,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:20,873 INFO L479 AbstractCegarLoop]: Abstraction has 852 states and 1127 transitions. [2020-09-25 07:57:20,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:57:20,873 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1127 transitions. [2020-09-25 07:57:20,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 07:57:20,876 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:20,877 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:57:20,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:57:20,877 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:20,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:20,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1824017853, now seen corresponding path program 1 times [2020-09-25 07:57:20,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:20,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531294206] [2020-09-25 07:57:20,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:20,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:20,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:21,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:21,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:21,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:22,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:22,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:23,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:25,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:25,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 07:57:25,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:57:25,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4315 [2020-09-25 07:57:25,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:25,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:25,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:57:25,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 07:57:25,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 07:57:25,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:25,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:25,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:25,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:25,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:25,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:25,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:25,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:57:25,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:25,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:25,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:57:25,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:25,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:57:25,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:25,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:25,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:25,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:25,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:25,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:57:25,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:25,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-25 07:57:25,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:25,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:25,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:57:25,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:25,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:57:25,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:25,597 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:25,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531294206] [2020-09-25 07:57:25,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:25,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 07:57:25,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642319627] [2020-09-25 07:57:25,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:57:25,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:25,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:57:25,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:57:25,602 INFO L87 Difference]: Start difference. First operand 852 states and 1127 transitions. Second operand 6 states. [2020-09-25 07:57:28,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:28,422 INFO L93 Difference]: Finished difference Result 2382 states and 3368 transitions. [2020-09-25 07:57:28,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:57:28,423 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2020-09-25 07:57:28,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:28,434 INFO L225 Difference]: With dead ends: 2382 [2020-09-25 07:57:28,435 INFO L226 Difference]: Without dead ends: 1696 [2020-09-25 07:57:28,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:57:28,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1696 states. [2020-09-25 07:57:28,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1696 to 1334. [2020-09-25 07:57:28,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1334 states. [2020-09-25 07:57:28,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 1848 transitions. [2020-09-25 07:57:28,497 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 1848 transitions. Word has length 157 [2020-09-25 07:57:28,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:28,498 INFO L479 AbstractCegarLoop]: Abstraction has 1334 states and 1848 transitions. [2020-09-25 07:57:28,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:57:28,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 1848 transitions. [2020-09-25 07:57:28,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 07:57:28,502 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:28,503 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:57:28,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:57:28,503 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:28,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:28,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1830974367, now seen corresponding path program 1 times [2020-09-25 07:57:28,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:28,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324698838] [2020-09-25 07:57:28,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:28,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:28,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:28,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:31,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:33,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:33,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-25 07:57:33,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:57:33,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 07:57:33,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:33,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:33,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:33,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 07:57:33,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 07:57:33,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:57:33,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:33,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:33,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:33,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:33,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:33,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:33,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 07:57:33,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:33,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:33,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:33,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:33,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:57:33,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:33,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:33,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:33,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:33,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 07:57:33,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:33,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-09-25 07:57:33,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:33,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:33,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:33,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:33,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 07:57:33,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:34,223 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:34,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324698838] [2020-09-25 07:57:34,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:57:34,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:57:34,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302135861] [2020-09-25 07:57:34,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:57:34,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:34,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:57:34,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:57:34,237 INFO L87 Difference]: Start difference. First operand 1334 states and 1848 transitions. Second operand 7 states. [2020-09-25 07:57:36,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:36,609 INFO L93 Difference]: Finished difference Result 3356 states and 4900 transitions. [2020-09-25 07:57:36,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:57:36,611 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2020-09-25 07:57:36,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:36,627 INFO L225 Difference]: With dead ends: 3356 [2020-09-25 07:57:36,627 INFO L226 Difference]: Without dead ends: 2037 [2020-09-25 07:57:36,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:57:36,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2037 states. [2020-09-25 07:57:36,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2037 to 1813. [2020-09-25 07:57:36,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1813 states. [2020-09-25 07:57:36,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 2424 transitions. [2020-09-25 07:57:36,726 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 2424 transitions. Word has length 190 [2020-09-25 07:57:36,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:36,728 INFO L479 AbstractCegarLoop]: Abstraction has 1813 states and 2424 transitions. [2020-09-25 07:57:36,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:57:36,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 2424 transitions. [2020-09-25 07:57:36,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-25 07:57:36,735 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:36,736 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, 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] [2020-09-25 07:57:36,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:57:36,736 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:36,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:36,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1649911016, now seen corresponding path program 1 times [2020-09-25 07:57:36,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:36,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019350837] [2020-09-25 07:57:36,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:36,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:36,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:36,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:37,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:37,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:38,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:38,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:38,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:39,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:39,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:41,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:41,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-09-25 07:57:41,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 07:57:41,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 07:57:41,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:41,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:41,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:57:41,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 07:57:41,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 07:57:41,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:57:41,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:41,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:41,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:41,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:41,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:41,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:57:41,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:41,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:41,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:57:41,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:41,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:57:41,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:41,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:41,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:42,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:42,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 07:57:42,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:42,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 07:57:42,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:42,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:42,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:42,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:42,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 07:57:42,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:42,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 07:57:42,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:42,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:42,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:42,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:42,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 07:57:42,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:57:42,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-09-25 07:57:42,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:42,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:42,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:57:42,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:42,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:57:42,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:57:42,577 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 07:57:42,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019350837] [2020-09-25 07:57:42,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:42,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:57:42,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364770546] [2020-09-25 07:57:42,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:57:42,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:42,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:57:42,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:57:42,580 INFO L87 Difference]: Start difference. First operand 1813 states and 2424 transitions. Second operand 9 states. [2020-09-25 07:57:47,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:47,271 INFO L93 Difference]: Finished difference Result 4280 states and 5999 transitions. [2020-09-25 07:57:47,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:57:47,272 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 230 [2020-09-25 07:57:47,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:47,286 INFO L225 Difference]: With dead ends: 4280 [2020-09-25 07:57:47,286 INFO L226 Difference]: Without dead ends: 2613 [2020-09-25 07:57:47,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-09-25 07:57:47,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2613 states. [2020-09-25 07:57:47,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2613 to 2126. [2020-09-25 07:57:47,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2126 states. [2020-09-25 07:57:47,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2126 states to 2126 states and 2815 transitions. [2020-09-25 07:57:47,371 INFO L78 Accepts]: Start accepts. Automaton has 2126 states and 2815 transitions. Word has length 230 [2020-09-25 07:57:47,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:47,372 INFO L479 AbstractCegarLoop]: Abstraction has 2126 states and 2815 transitions. [2020-09-25 07:57:47,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:57:47,372 INFO L276 IsEmpty]: Start isEmpty. Operand 2126 states and 2815 transitions. [2020-09-25 07:57:47,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-09-25 07:57:47,378 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:47,378 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, 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] [2020-09-25 07:57:47,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:57:47,379 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:47,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:47,379 INFO L82 PathProgramCache]: Analyzing trace with hash -864120155, now seen corresponding path program 1 times [2020-09-25 07:57:47,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:47,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506430006] [2020-09-25 07:57:47,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:47,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:47,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:47,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:48,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:49,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:49,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:50,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:50,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:52,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:52,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-09-25 07:57:52,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:57:52,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 07:57:52,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:52,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:52,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:57:52,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 07:57:52,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-25 07:57:52,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:52,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:52,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:52,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:52,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:52,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:52,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:57:52,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:52,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:52,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:57:52,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:52,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:57:52,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:57:52,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:52,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:52,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:52,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:52,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 07:57:52,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:52,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 07:57:52,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:52,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:52,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:57:52,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:52,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 07:57:52,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:57:52,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 07:57:52,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:52,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:52,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:52,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 07:57:52,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:52,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 07:57:52,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:52,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:52,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:52,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:52,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 07:57:52,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:57:52,870 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 177 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:57:52,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506430006] [2020-09-25 07:57:52,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:52,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:57:52,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855187234] [2020-09-25 07:57:52,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:57:52,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:52,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:57:52,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:57:52,872 INFO L87 Difference]: Start difference. First operand 2126 states and 2815 transitions. Second operand 8 states.