/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:10:49,873 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:10:49,877 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:10:49,904 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:10:49,904 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:10:49,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:10:49,907 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:10:49,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:10:49,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:10:49,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:10:49,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:10:49,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:10:49,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:10:49,916 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:10:49,917 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:10:49,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:10:49,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:10:49,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:10:49,922 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:10:49,924 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:10:49,926 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:10:49,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:10:49,929 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:10:49,930 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:10:49,932 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:10:49,932 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:10:49,933 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:10:49,934 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:10:49,934 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:10:49,935 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:10:49,936 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:10:49,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:10:49,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:10:49,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:10:49,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:10:49,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:10:49,941 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:10:49,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:10:49,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:10:49,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:10:49,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:10:49,944 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 10:10:49,971 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:10:49,971 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:10:49,972 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:10:49,973 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:10:49,973 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:10:49,973 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:10:49,973 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:10:49,973 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:10:49,974 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:10:49,974 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:10:49,974 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:10:49,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:10:49,975 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:10:49,975 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:10:49,975 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:10:49,975 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:10:49,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:10:49,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:10:49,976 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:10:49,976 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:10:49,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:10:49,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:10:49,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:10:49,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:10:49,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:10:49,977 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:10:49,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:10:49,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:10:49,978 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:10:49,978 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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:10:50,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:10:50,511 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:10:50,516 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:10:50,518 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:10:50,519 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:10:50,521 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label02.c [2020-09-25 10:10:50,618 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e8341006/9dac929b3cc94397a94a33fd66ed1fc9/FLAGe7dcd4ec2 [2020-09-25 10:10:51,298 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:10:51,299 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label02.c [2020-09-25 10:10:51,313 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e8341006/9dac929b3cc94397a94a33fd66ed1fc9/FLAGe7dcd4ec2 [2020-09-25 10:10:51,540 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e8341006/9dac929b3cc94397a94a33fd66ed1fc9 [2020-09-25 10:10:51,555 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:10:51,562 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:10:51,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:10:51,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:10:51,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:10:51,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:10:51" (1/1) ... [2020-09-25 10:10:51,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72eb96f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:51, skipping insertion in model container [2020-09-25 10:10:51,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:10:51" (1/1) ... [2020-09-25 10:10:51,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:10:51,655 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:10:52,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:10:52,131 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:10:52,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:10:52,349 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:10:52,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:52 WrapperNode [2020-09-25 10:10:52,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:10:52,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:10:52,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:10:52,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:10:52,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:52" (1/1) ... [2020-09-25 10:10:52,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:52" (1/1) ... [2020-09-25 10:10:52,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:52" (1/1) ... [2020-09-25 10:10:52,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:52" (1/1) ... [2020-09-25 10:10:52,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:52" (1/1) ... [2020-09-25 10:10:52,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:52" (1/1) ... [2020-09-25 10:10:52,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:52" (1/1) ... [2020-09-25 10:10:52,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:10:52,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:10:52,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:10:52,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:10:52,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:52" (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 10:10:52,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:10:52,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:10:52,592 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:10:52,592 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:10:52,592 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:10:52,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:10:52,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:10:52,593 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:10:52,593 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:10:52,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:10:52,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:10:54,090 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:10:54,090 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:10:54,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:10:54 BoogieIcfgContainer [2020-09-25 10:10:54,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:10:54,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:10:54,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:10:54,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:10:54,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:10:51" (1/3) ... [2020-09-25 10:10:54,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760b7f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:10:54, skipping insertion in model container [2020-09-25 10:10:54,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:52" (2/3) ... [2020-09-25 10:10:54,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760b7f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:10:54, skipping insertion in model container [2020-09-25 10:10:54,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:10:54" (3/3) ... [2020-09-25 10:10:54,111 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label02.c [2020-09-25 10:10:54,123 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:10:54,135 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:10:54,158 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:10:54,194 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:10:54,194 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:10:54,194 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:10:54,195 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:10:54,195 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:10:54,195 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:10:54,195 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:10:54,195 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:10:54,227 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 10:10:54,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 10:10:54,240 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:54,241 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] [2020-09-25 10:10:54,242 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:54,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:54,250 INFO L82 PathProgramCache]: Analyzing trace with hash 613515831, now seen corresponding path program 1 times [2020-09-25 10:10:54,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:54,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155607618] [2020-09-25 10:10:54,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:54,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:54,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:55,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:55,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 10:10:55,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:10:55,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1086 [2020-09-25 10:10:55,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:55,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:55,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:10:55,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:10:55,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 10:10:55,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 10:10:55,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:55,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:55,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:55,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:10:55,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:55,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 10:10:55,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:55,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:55,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:55,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:55,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:10:55,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:55,784 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 10:10:55,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155607618] [2020-09-25 10:10:55,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:10:55,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:10:55,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911540739] [2020-09-25 10:10:55,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:10:55,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:55,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:10:55,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:10:55,817 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 10:10:57,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:57,897 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 10:10:57,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:10:57,899 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-09-25 10:10:57,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:57,923 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 10:10:57,924 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 10:10:57,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:10:57,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 10:10:58,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 10:10:58,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 10:10:58,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 10:10:58,039 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 78 [2020-09-25 10:10:58,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:58,040 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 10:10:58,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:10:58,040 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 10:10:58,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 10:10:58,050 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:58,050 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:10:58,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:10:58,051 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:58,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:58,051 INFO L82 PathProgramCache]: Analyzing trace with hash 970656551, now seen corresponding path program 1 times [2020-09-25 10:10:58,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:58,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148843398] [2020-09-25 10:10:58,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:58,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:58,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:58,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:58,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:58,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:59,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:59,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:03,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:03,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 10:11:03,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:11:03,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4908 [2020-09-25 10:11:03,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:03,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:03,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:11:03,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:11:03,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-09-25 10:11:03,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:03,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:03,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:03,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:03,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:03,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:03,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 10:11:03,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:03,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:03,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:03,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:03,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:11:03,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:03,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:03,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:03,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:03,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:03,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:11:03,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:03,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 10:11:03,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:03,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:03,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:03,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:03,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:11:03,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:03,435 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:11:03,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148843398] [2020-09-25 10:11:03,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:03,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:11:03,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101602134] [2020-09-25 10:11:03,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:11:03,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:03,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:11:03,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:11:03,440 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 6 states. [2020-09-25 10:11:05,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:05,377 INFO L93 Difference]: Finished difference Result 1226 states and 1532 transitions. [2020-09-25 10:11:05,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:11:05,378 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2020-09-25 10:11:05,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:05,384 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 10:11:05,385 INFO L226 Difference]: Without dead ends: 697 [2020-09-25 10:11:05,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:11:05,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-09-25 10:11:05,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 695. [2020-09-25 10:11:05,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 10:11:05,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 10:11:05,434 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 157 [2020-09-25 10:11:05,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:05,435 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 10:11:05,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:11:05,436 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 10:11:05,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 10:11:05,445 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:05,445 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:05,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:11:05,446 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:05,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:05,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1315129595, now seen corresponding path program 1 times [2020-09-25 10:11:05,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:05,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380342234] [2020-09-25 10:11:05,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:05,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:05,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:05,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:05,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:06,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:07,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:09,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:09,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:10,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:10,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 10:11:10,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:11:10,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 10:11:10,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:10,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:10,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:11:10,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:11:10,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 10:11:10,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:11:10,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:10,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:10,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:10,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:10,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:10,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:10,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:11:10,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:10,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:10,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:11:10,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:10,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:11:10,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:10,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:10,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:10,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:11,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:11,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:11:11,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:11,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-09-25 10:11:11,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:11,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:11,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:11,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:11,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 10:11:11,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:11,220 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:11:11,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380342234] [2020-09-25 10:11:11,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:11,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:11:11,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251955232] [2020-09-25 10:11:11,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:11:11,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:11,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:11:11,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:11:11,224 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 11 states. [2020-09-25 10:11:14,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:14,125 INFO L93 Difference]: Finished difference Result 1618 states and 2057 transitions. [2020-09-25 10:11:14,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:11:14,128 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 167 [2020-09-25 10:11:14,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:14,135 INFO L225 Difference]: With dead ends: 1618 [2020-09-25 10:11:14,135 INFO L226 Difference]: Without dead ends: 1019 [2020-09-25 10:11:14,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:11:14,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2020-09-25 10:11:14,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 997. [2020-09-25 10:11:14,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-09-25 10:11:14,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1215 transitions. [2020-09-25 10:11:14,176 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1215 transitions. Word has length 167 [2020-09-25 10:11:14,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:14,177 INFO L479 AbstractCegarLoop]: Abstraction has 997 states and 1215 transitions. [2020-09-25 10:11:14,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:11:14,177 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1215 transitions. [2020-09-25 10:11:14,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 10:11:14,181 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:14,182 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:14,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:11:14,182 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:14,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:14,183 INFO L82 PathProgramCache]: Analyzing trace with hash -8332915, now seen corresponding path program 1 times [2020-09-25 10:11:14,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:14,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614260212] [2020-09-25 10:11:14,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:14,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:14,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:14,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:15,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:16,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:16,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 10:11:16,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:11:16,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2411 [2020-09-25 10:11:16,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:16,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:16,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:11:16,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:11:16,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-09-25 10:11:16,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:16,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:16,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:16,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:16,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:16,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:16,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:16,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 10:11:16,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:16,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:16,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:16,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:16,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:11:16,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:16,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:16,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:16,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:16,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 10:11:16,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:16,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-25 10:11:16,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:16,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:16,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:11:16,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:16,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 10:11:16,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:17,216 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:11:17,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614260212] [2020-09-25 10:11:17,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:17,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:11:17,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156595392] [2020-09-25 10:11:17,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:11:17,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:17,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:11:17,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:11:17,225 INFO L87 Difference]: Start difference. First operand 997 states and 1215 transitions. Second operand 8 states. [2020-09-25 10:11:20,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:20,542 INFO L93 Difference]: Finished difference Result 2384 states and 2963 transitions. [2020-09-25 10:11:20,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:11:20,547 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 169 [2020-09-25 10:11:20,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:20,557 INFO L225 Difference]: With dead ends: 2384 [2020-09-25 10:11:20,557 INFO L226 Difference]: Without dead ends: 1552 [2020-09-25 10:11:20,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:11:20,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2020-09-25 10:11:20,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1507. [2020-09-25 10:11:20,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1507 states. [2020-09-25 10:11:20,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 1796 transitions. [2020-09-25 10:11:20,614 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 1796 transitions. Word has length 169 [2020-09-25 10:11:20,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:20,615 INFO L479 AbstractCegarLoop]: Abstraction has 1507 states and 1796 transitions. [2020-09-25 10:11:20,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:11:20,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 1796 transitions. [2020-09-25 10:11:20,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-25 10:11:20,619 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:20,619 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:20,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:11:20,620 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:20,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:20,620 INFO L82 PathProgramCache]: Analyzing trace with hash 570322263, now seen corresponding path program 1 times [2020-09-25 10:11:20,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:20,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910459638] [2020-09-25 10:11:20,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:20,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:20,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:20,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:21,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:25,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:25,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:25,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:25,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:25,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-25 10:11:25,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:11:25,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 10:11:25,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:25,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:25,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:11:25,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:11:25,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-09-25 10:11:25,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:25,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:25,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:25,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:25,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:25,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:25,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:25,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:11:25,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:25,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:25,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:11:25,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:25,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:11:25,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:25,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:25,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:25,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:26,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:26,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:26,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 10:11:26,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:26,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-09-25 10:11:26,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:26,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:26,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:11:26,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:26,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 10:11:26,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:26,725 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:11:26,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910459638] [2020-09-25 10:11:26,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:26,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:11:26,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516239736] [2020-09-25 10:11:26,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:11:26,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:26,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:11:26,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:11:26,733 INFO L87 Difference]: Start difference. First operand 1507 states and 1796 transitions. Second operand 10 states. [2020-09-25 10:11:30,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:30,256 INFO L93 Difference]: Finished difference Result 3394 states and 4327 transitions. [2020-09-25 10:11:30,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:11:30,257 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 186 [2020-09-25 10:11:30,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:30,270 INFO L225 Difference]: With dead ends: 3394 [2020-09-25 10:11:30,271 INFO L226 Difference]: Without dead ends: 2497 [2020-09-25 10:11:30,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=127, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:11:30,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2497 states. [2020-09-25 10:11:30,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2497 to 2309. [2020-09-25 10:11:30,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2309 states. [2020-09-25 10:11:30,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 2822 transitions. [2020-09-25 10:11:30,382 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 2822 transitions. Word has length 186 [2020-09-25 10:11:30,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:30,382 INFO L479 AbstractCegarLoop]: Abstraction has 2309 states and 2822 transitions. [2020-09-25 10:11:30,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:11:30,382 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 2822 transitions. [2020-09-25 10:11:30,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-25 10:11:30,386 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:30,387 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:30,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:11:30,387 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:30,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:30,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1892330201, now seen corresponding path program 1 times [2020-09-25 10:11:30,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:30,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151784777] [2020-09-25 10:11:30,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:30,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:30,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:30,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:33,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:34,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:34,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:35,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:35,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-09-25 10:11:35,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:11:35,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 10:11:35,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:35,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:35,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:11:35,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:11:35,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-09-25 10:11:35,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:35,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:35,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:35,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:35,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:35,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:35,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 10:11:35,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:35,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:35,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:11:35,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:35,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:11:35,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:36,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:36,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:36,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:36,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:36,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 10:11:36,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:36,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-09-25 10:11:36,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:36,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:36,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:36,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:36,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 10:11:36,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:36,769 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:11:36,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151784777] [2020-09-25 10:11:36,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:36,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 10:11:36,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371020597] [2020-09-25 10:11:36,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:11:36,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:36,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:11:36,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:11:36,775 INFO L87 Difference]: Start difference. First operand 2309 states and 2822 transitions. Second operand 12 states.