/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:37:48,188 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:37:48,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:37:48,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:37:48,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:37:48,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:37:48,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:37:48,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:37:48,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:37:48,227 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:37:48,228 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:37:48,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:37:48,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:37:48,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:37:48,233 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:37:48,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:37:48,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:37:48,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:37:48,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:37:48,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:37:48,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:37:48,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:37:48,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:37:48,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:37:48,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:37:48,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:37:48,259 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:37:48,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:37:48,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:37:48,267 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:37:48,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:37:48,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:37:48,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:37:48,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:37:48,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:37:48,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:37:48,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:37:48,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:37:48,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:37:48,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:37:48,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:37:48,277 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 05:37:48,342 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:37:48,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:37:48,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:37:48,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:37:48,345 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:37:48,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:37:48,346 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:37:48,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:37:48,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:37:48,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:37:48,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:37:48,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:37:48,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:37:48,347 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:37:48,349 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:37:48,349 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:37:48,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:37:48,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:37:48,350 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:37:48,350 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:37:48,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:37:48,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:37:48,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:37:48,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:37:48,351 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:37:48,351 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:37:48,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:37:48,352 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:37:48,352 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:37:48,352 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:37:48,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:37:48,883 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:37:48,888 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:37:48,890 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:37:48,890 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:37:48,892 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label04.c [2020-09-25 05:37:48,975 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1560f18bf/aa68cd2fa0414514871138e8fdc72756/FLAGb1949ae59 [2020-09-25 05:37:49,614 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:37:49,622 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label04.c [2020-09-25 05:37:49,640 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1560f18bf/aa68cd2fa0414514871138e8fdc72756/FLAGb1949ae59 [2020-09-25 05:37:49,821 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1560f18bf/aa68cd2fa0414514871138e8fdc72756 [2020-09-25 05:37:49,833 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:37:49,839 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:37:49,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:37:49,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:37:49,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:37:49,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:37:49" (1/1) ... [2020-09-25 05:37:49,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42dfe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:49, skipping insertion in model container [2020-09-25 05:37:49,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:37:49" (1/1) ... [2020-09-25 05:37:49,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:37:49,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:37:50,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:37:50,622 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:37:50,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:37:50,863 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:37:50,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:50 WrapperNode [2020-09-25 05:37:50,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:37:50,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:37:50,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:37:50,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:37:50,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:50" (1/1) ... [2020-09-25 05:37:50,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:50" (1/1) ... [2020-09-25 05:37:50,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:50" (1/1) ... [2020-09-25 05:37:50,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:50" (1/1) ... [2020-09-25 05:37:50,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:50" (1/1) ... [2020-09-25 05:37:50,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:50" (1/1) ... [2020-09-25 05:37:50,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:50" (1/1) ... [2020-09-25 05:37:50,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:37:50,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:37:50,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:37:50,984 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:37:50,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:37:51,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:37:51,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:37:51,079 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:37:51,079 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:37:51,080 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:37:51,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:37:51,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:37:51,081 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:37:51,081 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:37:51,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:37:51,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:37:52,689 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:37:52,690 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:37:52,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:37:52 BoogieIcfgContainer [2020-09-25 05:37:52,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:37:52,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:37:52,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:37:52,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:37:52,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:37:49" (1/3) ... [2020-09-25 05:37:52,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e40405c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:37:52, skipping insertion in model container [2020-09-25 05:37:52,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:50" (2/3) ... [2020-09-25 05:37:52,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e40405c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:37:52, skipping insertion in model container [2020-09-25 05:37:52,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:37:52" (3/3) ... [2020-09-25 05:37:52,710 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label04.c [2020-09-25 05:37:52,722 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:37:52,735 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:37:52,758 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:37:52,795 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:37:52,796 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:37:52,796 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:37:52,796 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:37:52,796 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:37:52,796 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:37:52,797 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:37:52,797 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:37:52,830 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 05:37:52,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 05:37:52,843 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:52,845 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:37:52,845 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:52,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:52,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1435975873, now seen corresponding path program 1 times [2020-09-25 05:37:52,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:52,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001699951] [2020-09-25 05:37:52,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:53,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:53,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:53,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:53,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:53,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 05:37:53,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:37:53,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 732 [2020-09-25 05:37:53,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:53,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:53,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:37:53,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:37:53,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 05:37:53,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:37:54,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:54,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:54,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:54,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:54,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:37:54,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:54,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 05:37:54,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:54,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:54,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:54,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:54,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:37:54,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:54,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:37:54,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001699951] [2020-09-25 05:37:54,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:37:54,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:37:54,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566376190] [2020-09-25 05:37:54,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:37:54,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:54,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:37:54,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:37:54,156 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 05:37:56,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:56,209 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 05:37:56,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:37:56,211 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-09-25 05:37:56,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:56,236 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 05:37:56,237 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 05:37:56,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:37:56,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 05:37:56,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 05:37:56,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 05:37:56,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 05:37:56,389 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 85 [2020-09-25 05:37:56,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:56,390 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 05:37:56,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:37:56,391 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 05:37:56,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 05:37:56,406 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:56,407 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 05:37:56,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:37:56,408 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:56,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:56,408 INFO L82 PathProgramCache]: Analyzing trace with hash -2117933451, now seen corresponding path program 1 times [2020-09-25 05:37:56,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:56,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022850129] [2020-09-25 05:37:56,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:56,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:56,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:57,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:57,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:58,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:58,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:58,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 05:37:58,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:37:58,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2497 [2020-09-25 05:37:58,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:58,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:58,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:58,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 05:37:58,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 05:37:58,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:59,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:59,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:59,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:59,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:37:59,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:59,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:37:59,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:59,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:59,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:59,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:59,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:59,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:37:59,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:37:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:59,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:59,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:59,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 05:37:59,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:59,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 05:37:59,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:59,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:59,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:59,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:59,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 05:37:59,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:37:59,307 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 68 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:37:59,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022850129] [2020-09-25 05:37:59,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:59,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:37:59,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077321177] [2020-09-25 05:37:59,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:37:59,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:59,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:37:59,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:37:59,317 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 5 states. [2020-09-25 05:38:01,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:01,485 INFO L93 Difference]: Finished difference Result 1419 states and 1830 transitions. [2020-09-25 05:38:01,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:38:01,489 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-09-25 05:38:01,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:01,502 INFO L225 Difference]: With dead ends: 1419 [2020-09-25 05:38:01,502 INFO L226 Difference]: Without dead ends: 891 [2020-09-25 05:38:01,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:38:01,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-09-25 05:38:01,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 850. [2020-09-25 05:38:01,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2020-09-25 05:38:01,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1047 transitions. [2020-09-25 05:38:01,544 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1047 transitions. Word has length 165 [2020-09-25 05:38:01,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:01,545 INFO L479 AbstractCegarLoop]: Abstraction has 850 states and 1047 transitions. [2020-09-25 05:38:01,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:38:01,545 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1047 transitions. [2020-09-25 05:38:01,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 05:38:01,549 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:01,550 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 05:38:01,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:38:01,550 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:01,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:01,550 INFO L82 PathProgramCache]: Analyzing trace with hash 185368306, now seen corresponding path program 1 times [2020-09-25 05:38:01,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:01,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032518429] [2020-09-25 05:38:01,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:01,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:01,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:01,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:01,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:01,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:03,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:03,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:04,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:06,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:06,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 05:38:06,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:38:06,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 05:38:06,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:06,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:06,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:38:06,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 05:38:06,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 05:38:06,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:06,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:06,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:06,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:06,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:06,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:06,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:38:06,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:06,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:06,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:06,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:06,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:06,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:06,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:06,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:06,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:06,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:06,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:38:06,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:06,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 05:38:06,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:06,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:06,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:38:06,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:06,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 05:38:06,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:07,006 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 68 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:07,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032518429] [2020-09-25 05:38:07,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:07,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:38:07,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690374609] [2020-09-25 05:38:07,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:38:07,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:07,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:38:07,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:38:07,010 INFO L87 Difference]: Start difference. First operand 850 states and 1047 transitions. Second operand 6 states. [2020-09-25 05:38:09,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:09,878 INFO L93 Difference]: Finished difference Result 2692 states and 3487 transitions. [2020-09-25 05:38:09,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:38:09,879 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 174 [2020-09-25 05:38:09,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:09,899 INFO L225 Difference]: With dead ends: 2692 [2020-09-25 05:38:09,900 INFO L226 Difference]: Without dead ends: 1857 [2020-09-25 05:38:09,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:38:09,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2020-09-25 05:38:10,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 1780. [2020-09-25 05:38:10,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1780 states. [2020-09-25 05:38:10,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1780 states to 1780 states and 2286 transitions. [2020-09-25 05:38:10,032 INFO L78 Accepts]: Start accepts. Automaton has 1780 states and 2286 transitions. Word has length 174 [2020-09-25 05:38:10,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:10,040 INFO L479 AbstractCegarLoop]: Abstraction has 1780 states and 2286 transitions. [2020-09-25 05:38:10,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:38:10,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1780 states and 2286 transitions. [2020-09-25 05:38:10,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 05:38:10,045 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:10,046 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 05:38:10,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:38:10,046 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:10,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:10,047 INFO L82 PathProgramCache]: Analyzing trace with hash 969467690, now seen corresponding path program 1 times [2020-09-25 05:38:10,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:10,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281889235] [2020-09-25 05:38:10,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:10,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:10,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:10,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:10,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:11,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:13,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:13,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 05:38:13,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:38:13,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3427 [2020-09-25 05:38:13,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:13,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:13,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:38:13,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 05:38:13,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 05:38:13,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:13,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:13,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:13,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:13,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:13,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:13,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:38:13,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:13,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:13,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:13,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:13,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:13,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:13,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:13,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:13,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:13,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 05:38:13,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:13,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 05:38:13,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:13,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:13,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:38:13,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:13,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 05:38:13,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:13,860 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 68 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:13,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281889235] [2020-09-25 05:38:13,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:13,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:38:13,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071196153] [2020-09-25 05:38:13,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:38:13,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:13,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:38:13,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:38:13,867 INFO L87 Difference]: Start difference. First operand 1780 states and 2286 transitions. Second operand 6 states. [2020-09-25 05:38:16,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:16,465 INFO L93 Difference]: Finished difference Result 4368 states and 5812 transitions. [2020-09-25 05:38:16,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:38:16,466 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2020-09-25 05:38:16,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:16,483 INFO L225 Difference]: With dead ends: 4368 [2020-09-25 05:38:16,483 INFO L226 Difference]: Without dead ends: 2603 [2020-09-25 05:38:16,489 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 05:38:16,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2603 states. [2020-09-25 05:38:16,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2603 to 2543. [2020-09-25 05:38:16,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2543 states. [2020-09-25 05:38:16,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2543 states to 2543 states and 3296 transitions. [2020-09-25 05:38:16,596 INFO L78 Accepts]: Start accepts. Automaton has 2543 states and 3296 transitions. Word has length 176 [2020-09-25 05:38:16,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:16,597 INFO L479 AbstractCegarLoop]: Abstraction has 2543 states and 3296 transitions. [2020-09-25 05:38:16,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:38:16,597 INFO L276 IsEmpty]: Start isEmpty. Operand 2543 states and 3296 transitions. [2020-09-25 05:38:16,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 05:38:16,604 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:16,604 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 05:38:16,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:38:16,605 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:16,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:16,605 INFO L82 PathProgramCache]: Analyzing trace with hash -478403010, now seen corresponding path program 1 times [2020-09-25 05:38:16,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:16,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516370693] [2020-09-25 05:38:16,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:16,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:16,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:16,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:17,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:17,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:21,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:21,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:21,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:21,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:21,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 05:38:21,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:38:21,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:38:21,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:21,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:21,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:21,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-09-25 05:38:21,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 05:38:21,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:21,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:21,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:21,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:21,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:21,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:21,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:38:21,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:21,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:21,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:21,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:21,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:21,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:21,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:21,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:21,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:21,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 05:38:21,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:21,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 05:38:21,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:21,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:21,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:21,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:21,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 05:38:21,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:38:21,960 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 68 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:21,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516370693] [2020-09-25 05:38:21,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:21,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:38:21,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409454246] [2020-09-25 05:38:21,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:38:21,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:21,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:38:21,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:38:21,965 INFO L87 Difference]: Start difference. First operand 2543 states and 3296 transitions. Second operand 5 states. [2020-09-25 05:38:24,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:24,405 INFO L93 Difference]: Finished difference Result 6068 states and 7972 transitions. [2020-09-25 05:38:24,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:38:24,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-09-25 05:38:24,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:24,425 INFO L225 Difference]: With dead ends: 6068 [2020-09-25 05:38:24,425 INFO L226 Difference]: Without dead ends: 3540 [2020-09-25 05:38:24,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:38:24,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3540 states. [2020-09-25 05:38:24,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3540 to 3496. [2020-09-25 05:38:24,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3496 states. [2020-09-25 05:38:24,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3496 states to 3496 states and 4582 transitions. [2020-09-25 05:38:24,543 INFO L78 Accepts]: Start accepts. Automaton has 3496 states and 4582 transitions. Word has length 193 [2020-09-25 05:38:24,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:24,543 INFO L479 AbstractCegarLoop]: Abstraction has 3496 states and 4582 transitions. [2020-09-25 05:38:24,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:38:24,544 INFO L276 IsEmpty]: Start isEmpty. Operand 3496 states and 4582 transitions. [2020-09-25 05:38:24,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 05:38:24,550 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:24,551 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 05:38:24,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:38:24,551 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:24,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:24,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1535473745, now seen corresponding path program 1 times [2020-09-25 05:38:24,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:24,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90650434] [2020-09-25 05:38:24,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:24,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:24,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:24,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:28,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:28,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:28,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:29,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:29,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-09-25 05:38:29,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:38:29,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 05:38:29,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:29,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:29,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:29,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-09-25 05:38:29,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 05:38:29,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:29,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:29,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:29,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:29,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:29,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:29,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 05:38:29,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:29,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:29,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:29,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:29,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:29,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:38:29,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:29,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:29,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:30,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:30,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 05:38:30,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:30,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-09-25 05:38:30,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:30,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:30,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:30,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:30,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 05:38:30,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:30,152 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 68 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:30,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90650434] [2020-09-25 05:38:30,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:30,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:38:30,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145754432] [2020-09-25 05:38:30,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:38:30,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:30,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:38:30,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:38:30,155 INFO L87 Difference]: Start difference. First operand 3496 states and 4582 transitions. Second operand 5 states. [2020-09-25 05:38:32,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:32,416 INFO L93 Difference]: Finished difference Result 7977 states and 10567 transitions. [2020-09-25 05:38:32,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:38:32,417 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2020-09-25 05:38:32,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:32,445 INFO L225 Difference]: With dead ends: 7977 [2020-09-25 05:38:32,445 INFO L226 Difference]: Without dead ends: 4496 [2020-09-25 05:38:32,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:38:32,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4496 states. [2020-09-25 05:38:32,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4496 to 4454. [2020-09-25 05:38:32,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4454 states. [2020-09-25 05:38:32,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 5891 transitions. [2020-09-25 05:38:32,629 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 5891 transitions. Word has length 212 [2020-09-25 05:38:32,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:32,630 INFO L479 AbstractCegarLoop]: Abstraction has 4454 states and 5891 transitions. [2020-09-25 05:38:32,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:38:32,631 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 5891 transitions. [2020-09-25 05:38:32,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-09-25 05:38:32,638 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:32,639 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 05:38:32,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:38:32,639 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:32,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:32,640 INFO L82 PathProgramCache]: Analyzing trace with hash -933087353, now seen corresponding path program 1 times [2020-09-25 05:38:32,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:32,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763264892] [2020-09-25 05:38:32,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:32,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:32,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:32,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:32,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:33,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:33,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking...