/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 SequenceOfStatements --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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/linear_sea.ch.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 16:23:07,885 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 16:23:07,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 16:23:07,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 16:23:07,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 16:23:07,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 16:23:07,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 16:23:07,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 16:23:07,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 16:23:07,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 16:23:07,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 16:23:07,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 16:23:07,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 16:23:07,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 16:23:07,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 16:23:07,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 16:23:07,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 16:23:07,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 16:23:07,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 16:23:07,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 16:23:07,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 16:23:07,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 16:23:07,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 16:23:07,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 16:23:07,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 16:23:07,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 16:23:07,940 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 16:23:07,941 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 16:23:07,942 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 16:23:07,942 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 16:23:07,943 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 16:23:07,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 16:23:07,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 16:23:07,945 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 16:23:07,946 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 16:23:07,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 16:23:07,947 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 16:23:07,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 16:23:07,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 16:23:07,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 16:23:07,948 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 16:23:07,949 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 [2020-10-12 16:23:07,972 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 16:23:07,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 16:23:07,973 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 16:23:07,973 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 16:23:07,974 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 16:23:07,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 16:23:07,974 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 16:23:07,974 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 16:23:07,974 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 16:23:07,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 16:23:07,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 16:23:07,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 16:23:07,975 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 16:23:07,975 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 16:23:07,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 16:23:07,976 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 16:23:07,976 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 16:23:07,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 16:23:07,976 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 16:23:07,977 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 16:23:07,977 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 16:23:07,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 16:23:07,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 16:23:07,978 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 16:23:07,978 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 16:23:07,978 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 16:23:07,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 16:23:07,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 16:23:07,979 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 16:23:07,979 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 -> SequenceOfStatements 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 16:23:08,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 16:23:08,312 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 16:23:08,315 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 16:23:08,317 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 16:23:08,317 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 16:23:08,318 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/linear_sea.ch.c [2020-10-12 16:23:08,384 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/190bad8a1/f1074201c7014fc29e0bcfa252aa5d37/FLAGfb5f1b561 [2020-10-12 16:23:08,840 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 16:23:08,841 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/linear_sea.ch.c [2020-10-12 16:23:08,847 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/190bad8a1/f1074201c7014fc29e0bcfa252aa5d37/FLAGfb5f1b561 [2020-10-12 16:23:09,262 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/190bad8a1/f1074201c7014fc29e0bcfa252aa5d37 [2020-10-12 16:23:09,271 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 16:23:09,273 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 16:23:09,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 16:23:09,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 16:23:09,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 16:23:09,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:23:09" (1/1) ... [2020-10-12 16:23:09,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb2c9e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:23:09, skipping insertion in model container [2020-10-12 16:23:09,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:23:09" (1/1) ... [2020-10-12 16:23:09,291 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 16:23:09,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 16:23:09,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:23:09,498 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 16:23:09,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:23:09,532 INFO L208 MainTranslator]: Completed translation [2020-10-12 16:23:09,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:23:09 WrapperNode [2020-10-12 16:23:09,533 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 16:23:09,534 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 16:23:09,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 16:23:09,534 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 16:23:09,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:23:09" (1/1) ... [2020-10-12 16:23:09,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:23:09" (1/1) ... [2020-10-12 16:23:09,636 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:23:09" (1/1) ... [2020-10-12 16:23:09,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:23:09" (1/1) ... [2020-10-12 16:23:09,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:23:09" (1/1) ... [2020-10-12 16:23:09,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:23:09" (1/1) ... [2020-10-12 16:23:09,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:23:09" (1/1) ... [2020-10-12 16:23:09,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 16:23:09,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 16:23:09,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 16:23:09,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 16:23:09,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:23:09" (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 [2020-10-12 16:23:09,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 16:23:09,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 16:23:09,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 16:23:09,725 INFO L138 BoogieDeclarations]: Found implementation of procedure linear_search [2020-10-12 16:23:09,725 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 16:23:09,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 16:23:09,725 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 16:23:09,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 16:23:09,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-12 16:23:09,726 INFO L130 BoogieDeclarations]: Found specification of procedure linear_search [2020-10-12 16:23:09,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 16:23:09,726 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 16:23:09,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 16:23:09,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 16:23:09,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 16:23:09,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 16:23:09,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 16:23:09,963 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 16:23:09,963 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 16:23:09,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:23:09 BoogieIcfgContainer [2020-10-12 16:23:09,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 16:23:09,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 16:23:09,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 16:23:09,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 16:23:09,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 04:23:09" (1/3) ... [2020-10-12 16:23:09,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f6d496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:23:09, skipping insertion in model container [2020-10-12 16:23:09,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:23:09" (2/3) ... [2020-10-12 16:23:09,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f6d496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:23:09, skipping insertion in model container [2020-10-12 16:23:09,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:23:09" (3/3) ... [2020-10-12 16:23:09,975 INFO L109 eAbstractionObserver]: Analyzing ICFG linear_sea.ch.c [2020-10-12 16:23:09,989 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 16:23:09,999 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 16:23:10,014 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 16:23:10,041 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 16:23:10,041 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 16:23:10,042 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 16:23:10,042 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 16:23:10,042 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 16:23:10,042 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 16:23:10,042 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 16:23:10,043 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 16:23:10,063 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-12 16:23:10,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-12 16:23:10,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:23:10,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:23:10,072 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:23:10,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:23:10,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1860043698, now seen corresponding path program 1 times [2020-10-12 16:23:10,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:23:10,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600125841] [2020-10-12 16:23:10,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:23:10,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:10,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:10,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:10,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:10,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 16:23:10,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:23:10,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 536 [2020-10-12 16:23:10,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:10,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:23:10,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 16:23:10,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 16:23:10,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-12 16:23:10,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:23:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:10,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:10,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:10,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:23:10,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:23:10,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:23:10,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:10,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:23:10,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:23:10,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:23:10,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:23:10,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 16:23:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:10,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:10,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:10,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:10,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 16:23:10,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:23:10,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 16:23:10,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:10,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:23:10,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:23:10,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:23:10,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:23:10,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:23:10,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600125841] [2020-10-12 16:23:10,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:23:10,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 16:23:10,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2199520] [2020-10-12 16:23:10,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 16:23:10,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:23:10,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 16:23:10,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 16:23:10,994 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 7 states. [2020-10-12 16:23:11,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:23:11,250 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2020-10-12 16:23:11,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 16:23:11,252 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-10-12 16:23:11,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:23:11,260 INFO L225 Difference]: With dead ends: 53 [2020-10-12 16:23:11,260 INFO L226 Difference]: Without dead ends: 21 [2020-10-12 16:23:11,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-12 16:23:11,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-12 16:23:11,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-12 16:23:11,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-12 16:23:11,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-10-12 16:23:11,302 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 18 [2020-10-12 16:23:11,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:23:11,303 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-10-12 16:23:11,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 16:23:11,303 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-10-12 16:23:11,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-12 16:23:11,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:23:11,304 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] [2020-10-12 16:23:11,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 16:23:11,305 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:23:11,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:23:11,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1635275802, now seen corresponding path program 1 times [2020-10-12 16:23:11,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:23:11,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529811057] [2020-10-12 16:23:11,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:23:11,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:11,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:11,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:11,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:11,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:11,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 16:23:11,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:23:11,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-10-12 16:23:11,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:11,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:23:11,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 16:23:11,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 16:23:11,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:23:11,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:23:11,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:11,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:11,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:11,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:23:11,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:23:11,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:23:11,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:11,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:23:11,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:23:11,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:23:11,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:23:11,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 16:23:11,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:11,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:11,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:11,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 16:23:11,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:23:11,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-12 16:23:11,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:11,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:23:11,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 16:23:11,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 16:23:11,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:23:12,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:23:12,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529811057] [2020-10-12 16:23:12,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:23:12,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 16:23:12,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245136402] [2020-10-12 16:23:12,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 16:23:12,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:23:12,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 16:23:12,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 16:23:12,021 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 7 states. [2020-10-12 16:23:12,381 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-12 16:23:12,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:23:12,428 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-10-12 16:23:12,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 16:23:12,429 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-12 16:23:12,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:23:12,432 INFO L225 Difference]: With dead ends: 37 [2020-10-12 16:23:12,432 INFO L226 Difference]: Without dead ends: 28 [2020-10-12 16:23:12,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-12 16:23:12,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-12 16:23:12,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2020-10-12 16:23:12,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-12 16:23:12,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-10-12 16:23:12,441 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 20 [2020-10-12 16:23:12,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:23:12,442 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-10-12 16:23:12,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 16:23:12,442 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-10-12 16:23:12,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-12 16:23:12,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:23:12,443 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] [2020-10-12 16:23:12,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 16:23:12,444 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:23:12,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:23:12,444 INFO L82 PathProgramCache]: Analyzing trace with hash -2028302812, now seen corresponding path program 1 times [2020-10-12 16:23:12,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:23:12,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184184398] [2020-10-12 16:23:12,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:23:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:12,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:12,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:12,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:12,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:12,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:12,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:12,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:12,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 16:23:12,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 16:23:12,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-10-12 16:23:12,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:12,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:23:12,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 16:23:12,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 16:23:12,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:23:12,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:23:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:12,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:12,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:12,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:23:12,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:23:12,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:23:12,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:12,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:23:12,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:23:12,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:23:12,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:23:12,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 16:23:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:12,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:12,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:12,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:12,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:12,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 16:23:12,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:23:12,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-12 16:23:12,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:12,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:23:12,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 16:23:12,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 16:23:12,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:23:13,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:23:13,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184184398] [2020-10-12 16:23:13,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:23:13,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 16:23:13,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751248155] [2020-10-12 16:23:13,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 16:23:13,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:23:13,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 16:23:13,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 16:23:13,105 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 7 states. [2020-10-12 16:23:13,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:23:13,439 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-10-12 16:23:13,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 16:23:13,440 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-12 16:23:13,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:23:13,441 INFO L225 Difference]: With dead ends: 40 [2020-10-12 16:23:13,441 INFO L226 Difference]: Without dead ends: 24 [2020-10-12 16:23:13,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-12 16:23:13,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-12 16:23:13,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-12 16:23:13,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-12 16:23:13,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-10-12 16:23:13,448 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 20 [2020-10-12 16:23:13,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:23:13,448 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-10-12 16:23:13,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 16:23:13,448 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-10-12 16:23:13,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-12 16:23:13,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:23:13,449 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:23:13,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 16:23:13,450 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:23:13,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:23:13,450 INFO L82 PathProgramCache]: Analyzing trace with hash 636491705, now seen corresponding path program 1 times [2020-10-12 16:23:13,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:23:13,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913836071] [2020-10-12 16:23:13,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:23:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:13,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:13,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:13,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:13,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 16:23:13,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:23:13,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 397 [2020-10-12 16:23:13,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:13,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:23:13,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 16:23:13,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 16:23:13,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:23:13,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:23:13,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:13,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:13,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:13,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:23:13,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:23:13,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:23:13,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:13,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:23:13,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:23:13,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:23:13,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:23:13,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 16:23:13,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:13,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:14,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:14,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 16:23:14,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:23:14,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-12 16:23:14,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:14,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:23:14,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 16:23:14,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 16:23:14,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:23:14,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 16:23:14,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913836071] [2020-10-12 16:23:14,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:23:14,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 16:23:14,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773791418] [2020-10-12 16:23:14,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 16:23:14,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:23:14,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 16:23:14,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 16:23:14,152 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 7 states. [2020-10-12 16:23:14,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:23:14,443 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-10-12 16:23:14,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 16:23:14,444 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-12 16:23:14,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:23:14,446 INFO L225 Difference]: With dead ends: 34 [2020-10-12 16:23:14,446 INFO L226 Difference]: Without dead ends: 25 [2020-10-12 16:23:14,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-12 16:23:14,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-12 16:23:14,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2020-10-12 16:23:14,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-12 16:23:14,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-10-12 16:23:14,453 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 23 [2020-10-12 16:23:14,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:23:14,454 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-10-12 16:23:14,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 16:23:14,454 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-10-12 16:23:14,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-12 16:23:14,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:23:14,455 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:23:14,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 16:23:14,456 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:23:14,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:23:14,456 INFO L82 PathProgramCache]: Analyzing trace with hash 243464695, now seen corresponding path program 1 times [2020-10-12 16:23:14,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:23:14,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509476116] [2020-10-12 16:23:14,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:23:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:14,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:14,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:14,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:15,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:15,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 16:23:15,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:23:15,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 712 [2020-10-12 16:23:15,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:15,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 16:23:15,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 16:23:15,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 16:23:15,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:23:15,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:23:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:15,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:15,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:15,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:23:15,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:23:15,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:23:15,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:15,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:23:15,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:23:15,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:23:15,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:23:15,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 16:23:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:15,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:15,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:15,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:15,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:15,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 16:23:15,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:23:15,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-12 16:23:15,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:15,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 16:23:15,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 16:23:15,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 16:23:15,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:23:15,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:23:15,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509476116] [2020-10-12 16:23:15,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:23:15,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 16:23:15,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717882790] [2020-10-12 16:23:15,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 16:23:15,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:23:15,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 16:23:15,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-12 16:23:15,633 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 8 states. [2020-10-12 16:23:16,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:23:16,085 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2020-10-12 16:23:16,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 16:23:16,085 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-10-12 16:23:16,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:23:16,087 INFO L225 Difference]: With dead ends: 45 [2020-10-12 16:23:16,087 INFO L226 Difference]: Without dead ends: 28 [2020-10-12 16:23:16,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-10-12 16:23:16,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-12 16:23:16,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-12 16:23:16,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-12 16:23:16,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-10-12 16:23:16,097 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 23 [2020-10-12 16:23:16,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:23:16,097 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-10-12 16:23:16,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 16:23:16,098 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-10-12 16:23:16,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-12 16:23:16,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:23:16,099 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:23:16,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 16:23:16,100 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:23:16,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:23:16,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1625384636, now seen corresponding path program 2 times [2020-10-12 16:23:16,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:23:16,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549562653] [2020-10-12 16:23:16,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:23:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:16,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:16,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:16,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:17,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:17,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 16:23:17,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:23:17,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1611 [2020-10-12 16:23:17,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:17,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 16:23:17,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 16:23:17,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 16:23:17,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:23:17,949 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 25 [2020-10-12 16:23:17,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:23:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:17,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:17,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:17,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:23:17,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:23:17,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:23:17,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:17,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:23:17,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:23:17,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:23:17,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:23:17,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 16:23:17,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:17,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:18,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:18,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:18,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:18,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 16:23:18,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:23:18,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 645 [2020-10-12 16:23:18,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:18,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 16:23:18,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 16:23:18,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 16:23:18,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:23:19,060 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-10-12 16:23:19,236 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:23:19,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549562653] [2020-10-12 16:23:19,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:23:19,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 16:23:19,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029810247] [2020-10-12 16:23:19,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 16:23:19,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:23:19,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 16:23:19,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-12 16:23:19,238 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 10 states. [2020-10-12 16:23:20,024 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-12 16:23:20,286 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-12 16:23:20,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:23:20,568 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2020-10-12 16:23:20,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 16:23:20,569 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-10-12 16:23:20,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:23:20,570 INFO L225 Difference]: With dead ends: 48 [2020-10-12 16:23:20,570 INFO L226 Difference]: Without dead ends: 31 [2020-10-12 16:23:20,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-12 16:23:20,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-12 16:23:20,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-10-12 16:23:20,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-12 16:23:20,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-10-12 16:23:20,578 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 26 [2020-10-12 16:23:20,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:23:20,578 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-10-12 16:23:20,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 16:23:20,578 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-10-12 16:23:20,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-12 16:23:20,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:23:20,579 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:23:20,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 16:23:20,580 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:23:20,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:23:20,580 INFO L82 PathProgramCache]: Analyzing trace with hash -854746409, now seen corresponding path program 3 times [2020-10-12 16:23:20,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:23:20,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036678689] [2020-10-12 16:23:20,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:23:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:20,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:20,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:21,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:22,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:22,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 16:23:22,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:23:22,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1542 [2020-10-12 16:23:22,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:22,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 16:23:22,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 16:23:22,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 16:23:22,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:23:24,429 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 158 DAG size of output: 29 [2020-10-12 16:23:24,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:23:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:24,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:24,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:24,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:23:24,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:23:24,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:23:24,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:24,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:23:24,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:23:24,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:23:24,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:23:24,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 16:23:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:24,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:24,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:24,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:25,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:25,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 16:23:25,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:23:25,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 551 [2020-10-12 16:23:25,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:25,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 16:23:25,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 16:23:25,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 16:23:25,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:23:25,649 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2020-10-12 16:23:25,842 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:23:25,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036678689] [2020-10-12 16:23:25,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:23:25,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 16:23:25,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094465542] [2020-10-12 16:23:25,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 16:23:25,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:23:25,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 16:23:25,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-12 16:23:25,845 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 11 states. [2020-10-12 16:23:26,698 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2020-10-12 16:23:27,137 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 80 [2020-10-12 16:23:27,402 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2020-10-12 16:23:27,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:23:27,665 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2020-10-12 16:23:27,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 16:23:27,666 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-10-12 16:23:27,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:23:27,667 INFO L225 Difference]: With dead ends: 51 [2020-10-12 16:23:27,667 INFO L226 Difference]: Without dead ends: 34 [2020-10-12 16:23:27,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2020-10-12 16:23:27,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-12 16:23:27,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-12 16:23:27,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-12 16:23:27,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-10-12 16:23:27,685 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 29 [2020-10-12 16:23:27,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:23:27,685 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-10-12 16:23:27,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 16:23:27,685 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-10-12 16:23:27,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 16:23:27,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:23:27,688 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:23:27,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 16:23:27,688 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:23:27,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:23:27,688 INFO L82 PathProgramCache]: Analyzing trace with hash 628477028, now seen corresponding path program 4 times [2020-10-12 16:23:27,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:23:27,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461433664] [2020-10-12 16:23:27,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:23:27,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:27,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:28,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:28,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:28,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:29,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:29,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:32,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:32,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 16:23:32,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 16:23:32,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 16:23:32,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:32,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 16:23:32,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 16:23:32,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 16:23:32,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:23:34,135 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 214 DAG size of output: 35 [2020-10-12 16:23:34,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:23:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:34,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:34,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:34,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:23:34,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:23:34,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:23:34,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:34,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:23:34,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:23:34,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:23:34,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:23:34,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 16:23:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:23:34,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:34,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:34,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:23:34,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:23:34,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 16:23:34,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:23:34,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 795 [2020-10-12 16:23:34,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:23:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 16:23:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 16:23:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 16:23:34,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:23:35,481 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2020-10-12 16:23:35,757 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2020-10-12 16:23:35,996 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2020-10-12 16:23:46,493 WARN L193 SmtUtils]: Spent 10.41 s on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2020-10-12 16:23:48,840 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:23:48,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461433664] [2020-10-12 16:23:48,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:23:48,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 16:23:48,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675145540] [2020-10-12 16:23:48,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 16:23:48,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:23:48,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 16:23:48,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=153, Unknown=1, NotChecked=0, Total=182 [2020-10-12 16:23:48,842 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 14 states. [2020-10-12 16:23:51,017 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 61 [2020-10-12 16:23:51,185 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2020-10-12 16:23:59,529 WARN L193 SmtUtils]: Spent 6.24 s on a formula simplification that was a NOOP. DAG size: 79 [2020-10-12 16:24:16,188 WARN L193 SmtUtils]: Spent 12.49 s on a formula simplification that was a NOOP. DAG size: 109 [2020-10-12 16:24:18,691 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 107 [2020-10-12 16:24:35,406 WARN L193 SmtUtils]: Spent 16.60 s on a formula simplification. DAG size of input: 106 DAG size of output: 77 [2020-10-12 16:24:39,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:24:39,794 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2020-10-12 16:24:39,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 16:24:39,795 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 32 [2020-10-12 16:24:39,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:24:39,795 INFO L225 Difference]: With dead ends: 54 [2020-10-12 16:24:39,796 INFO L226 Difference]: Without dead ends: 37 [2020-10-12 16:24:39,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 55.7s TimeCoverageRelationStatistics Valid=101, Invalid=546, Unknown=3, NotChecked=0, Total=650 [2020-10-12 16:24:39,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-12 16:24:39,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-10-12 16:24:39,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-12 16:24:39,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-10-12 16:24:39,805 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 32 [2020-10-12 16:24:39,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:24:39,805 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-10-12 16:24:39,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 16:24:39,806 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-10-12 16:24:39,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-12 16:24:39,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:24:39,807 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:24:39,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 16:24:39,807 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:24:39,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:24:39,807 INFO L82 PathProgramCache]: Analyzing trace with hash 714347447, now seen corresponding path program 5 times [2020-10-12 16:24:39,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:24:39,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662077741] [2020-10-12 16:24:39,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:24:39,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:24:39,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:24:40,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:24:40,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:24:40,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:24:41,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:24:41,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:24:42,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:24:43,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:24:44,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:24:44,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 16:24:44,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 16:24:44,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-12 16:24:44,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:24:44,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 16:24:44,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 16:24:44,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 16:24:44,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:24:51,457 WARN L193 SmtUtils]: Spent 6.45 s on a formula simplification. DAG size of input: 203 DAG size of output: 36 [2020-10-12 16:24:51,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:24:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:24:51,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:24:51,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:24:51,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:24:51,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:24:51,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:24:51,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:24:51,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:24:51,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:24:51,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:24:51,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:24:51,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 16:24:51,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:24:51,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:24:51,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:24:51,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:24:52,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:24:52,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 16:24:52,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:24:52,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1460 [2020-10-12 16:24:52,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:24:52,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 16:24:52,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 16:24:52,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 16:24:52,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:24:53,304 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2020-10-12 16:24:53,475 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 41 [2020-10-12 16:24:53,682 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 38 [2020-10-12 16:24:54,073 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 49 [2020-10-12 16:24:54,358 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2020-10-12 16:24:54,648 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 73 [2020-10-12 16:26:06,750 WARN L193 SmtUtils]: Spent 1.17 m on a formula simplification. DAG size of input: 93 DAG size of output: 77 [2020-10-12 16:26:08,951 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2020-10-12 16:26:09,161 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:26:09,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662077741] [2020-10-12 16:26:09,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:26:09,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 16:26:09,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950119825] [2020-10-12 16:26:09,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 16:26:09,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:26:09,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 16:26:09,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=179, Unknown=1, NotChecked=0, Total=210 [2020-10-12 16:26:09,163 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 15 states. [2020-10-12 16:26:10,293 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 73 [2020-10-12 16:26:10,527 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 70 [2020-10-12 16:26:35,103 WARN L193 SmtUtils]: Spent 22.45 s on a formula simplification that was a NOOP. DAG size: 92 [2020-10-12 16:26:37,181 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (div c_linear_search_~n 4294967296))) (let ((.cse3 (+ .cse0 1))) (let ((.cse1 (div c_linear_search_~j~0 4294967296)) (.cse5 (* 4294967296 .cse0)) (.cse4 (< 0 .cse3)) (.cse11 (* 2 |c_linear_search_#in~n|)) (.cse8 (select |c_#memory_int| |c_linear_search_#in~a.base|)) (.cse9 (* |c_linear_search_#in~n| 2)) (.cse2 (<= 4294967301 |c_linear_search_#in~n|))) (and (= c_~MAX~0 |c_old(~MAX~0)|) (or (<= .cse0 .cse1) .cse2) (= c_~SIZE~0 |c_old(~SIZE~0)|) (or (< .cse1 .cse3) (<= (+ c_linear_search_~j~0 |c_linear_search_#in~n|) (+ c_linear_search_~n 5))) (= |c_#NULL.base| |c_old(#NULL.base)|) (or (<= .cse3 .cse1) (and .cse4 (<= (+ .cse5 5) |c_linear_search_#in~n|))) (= |c_#NULL.offset| |c_old(#NULL.offset)|) (or (< .cse1 .cse0) (and (or (let ((.cse12 (div (+ c_linear_search_~j~0 |c_linear_search_#in~n| (* c_linear_search_~n (- 1))) 2))) (let ((.cse10 (div (+ .cse12 4294967293) 4294967296))) (let ((.cse6 (+ (* 8589934592 .cse0) (* 4 .cse12) (* 17179869184 .cse10) 2)) (.cse7 (+ (* 17179869184 (div (+ (* .cse0 (- 4294967296)) |c_linear_search_#in~n| (- 1)) 8589934592)) .cse11))) (and (<= .cse6 .cse7) (or (not (= (select .cse8 (+ |c_linear_search_#in~a.offset| (* .cse0 (- 8589934592)) .cse9 (* .cse10 (- 17179869184)) (- 2))) |c_linear_search_#in~q|)) (< .cse6 .cse7)))))) (<= .cse3 0)) (or (<= |c_linear_search_#in~n| (+ .cse5 4294967295)) .cse4))) (or (and (or (<= (+ |c_linear_search_#in~n| 4294967291) 0) (<= 5 |c_linear_search_#in~n|)) (or (let ((.cse13 (div |c_linear_search_#in~n| 2))) (let ((.cse14 (div (+ .cse13 4294967293) 4294967296))) (and (<= (+ (* 4 .cse13) (* 17179869184 .cse14) 2) (+ .cse11 (* 17179869184 (div (+ |c_linear_search_#in~n| (- 1)) 8589934592)))) (not (= (select .cse8 (+ (* .cse14 (- 17179869184)) |c_linear_search_#in~a.offset| .cse9 (- 2))) |c_linear_search_#in~q|))))) .cse2 (<= (+ |c_linear_search_#in~n| 1) 0))) |c_linear_search_#t~short1|) (= |c_old(#valid)| |c_#valid|))))) is different from false [2020-10-12 16:26:39,361 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 63 [2020-10-12 16:26:39,618 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-12 16:26:39,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:26:39,783 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2020-10-12 16:26:39,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 16:26:39,784 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 35 [2020-10-12 16:26:39,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:26:39,785 INFO L225 Difference]: With dead ends: 50 [2020-10-12 16:26:39,785 INFO L226 Difference]: Without dead ends: 41 [2020-10-12 16:26:39,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 112.3s TimeCoverageRelationStatistics Valid=89, Invalid=562, Unknown=3, NotChecked=48, Total=702 [2020-10-12 16:26:39,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-12 16:26:39,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-10-12 16:26:39,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-12 16:26:39,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-10-12 16:26:39,795 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 35 [2020-10-12 16:26:39,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:26:39,796 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-10-12 16:26:39,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 16:26:39,796 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-10-12 16:26:39,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-12 16:26:39,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:26:39,797 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:26:39,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 16:26:39,798 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:26:39,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:26:39,798 INFO L82 PathProgramCache]: Analyzing trace with hash -920508540, now seen corresponding path program 6 times [2020-10-12 16:26:39,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:26:39,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409407574] [2020-10-12 16:26:39,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:26:39,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:26:39,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:26:40,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:26:40,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:26:40,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:26:40,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:26:41,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:26:41,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:26:41,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:26:42,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:26:42,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:26:44,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:26:44,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 16:26:44,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 16:26:44,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 16:26:44,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:26:44,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 16:26:44,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 16:26:44,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 16:26:44,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:26:49,185 WARN L193 SmtUtils]: Spent 4.31 s on a formula simplification. DAG size of input: 176 DAG size of output: 29 [2020-10-12 16:26:49,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:26:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:26:49,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:26:49,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:26:49,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:26:49,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:26:49,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:26:49,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:26:49,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:26:49,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:26:49,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:26:49,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:26:49,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 16:26:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:26:49,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:26:49,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:26:49,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:26:49,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:26:50,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:26:50,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:26:50,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:26:50,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:26:50,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:26:51,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:26:51,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:26:51,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:26:54,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:26:54,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 16:26:54,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 16:26:54,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 16:26:54,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:26:54,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 16:26:54,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 16:26:54,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 16:26:54,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:26:55,353 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 36 [2020-10-12 16:26:55,646 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 37 [2020-10-12 16:26:55,926 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 56 [2020-10-12 16:26:56,305 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 89 [2020-10-12 16:26:56,708 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 85 [2020-10-12 16:27:06,166 WARN L193 SmtUtils]: Spent 9.29 s on a formula simplification. DAG size of input: 116 DAG size of output: 105 [2020-10-12 16:27:11,418 WARN L193 SmtUtils]: Spent 2.92 s on a formula simplification. DAG size of input: 129 DAG size of output: 109 [2020-10-12 16:27:11,788 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 87 [2020-10-12 16:27:12,113 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 85 [2020-10-12 16:27:12,142 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:27:12,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409407574] [2020-10-12 16:27:12,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:27:12,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 16:27:12,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640261311] [2020-10-12 16:27:12,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 16:27:12,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:27:12,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 16:27:12,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=236, Unknown=1, NotChecked=0, Total=272 [2020-10-12 16:27:12,144 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 17 states. [2020-10-12 16:27:13,288 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-10-12 16:27:14,121 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 93 [2020-10-12 16:27:15,024 WARN L193 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 91