/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/array-crafted/mapsum5.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 09:38:56,986 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 09:38:56,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 09:38:57,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 09:38:57,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 09:38:57,038 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 09:38:57,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 09:38:57,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 09:38:57,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 09:38:57,048 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 09:38:57,049 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 09:38:57,050 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 09:38:57,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 09:38:57,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 09:38:57,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 09:38:57,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 09:38:57,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 09:38:57,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 09:38:57,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 09:38:57,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 09:38:57,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 09:38:57,070 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 09:38:57,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 09:38:57,071 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 09:38:57,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 09:38:57,083 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 09:38:57,083 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 09:38:57,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 09:38:57,090 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 09:38:57,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 09:38:57,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 09:38:57,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 09:38:57,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 09:38:57,098 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 09:38:57,099 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 09:38:57,099 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 09:38:57,100 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 09:38:57,100 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 09:38:57,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 09:38:57,101 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 09:38:57,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 09:38:57,103 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 09:38:57,140 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 09:38:57,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 09:38:57,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 09:38:57,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 09:38:57,142 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 09:38:57,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 09:38:57,143 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 09:38:57,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 09:38:57,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 09:38:57,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 09:38:57,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 09:38:57,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 09:38:57,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 09:38:57,144 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 09:38:57,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 09:38:57,145 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 09:38:57,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 09:38:57,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 09:38:57,145 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 09:38:57,145 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 09:38:57,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 09:38:57,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 09:38:57,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 09:38:57,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 09:38:57,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 09:38:57,147 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 09:38:57,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 09:38:57,147 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 09:38:57,147 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 09:38:57,147 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 09:38:57,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 09:38:57,425 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 09:38:57,429 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 09:38:57,430 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 09:38:57,430 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 09:38:57,431 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapsum5.i [2020-10-12 09:38:57,492 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7326ef4b/00a17e3cf55f42e2ac59ab1e69745818/FLAGb39508a28 [2020-10-12 09:38:57,921 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 09:38:57,922 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/mapsum5.i [2020-10-12 09:38:57,928 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7326ef4b/00a17e3cf55f42e2ac59ab1e69745818/FLAGb39508a28 [2020-10-12 09:38:58,303 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7326ef4b/00a17e3cf55f42e2ac59ab1e69745818 [2020-10-12 09:38:58,313 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 09:38:58,315 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 09:38:58,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 09:38:58,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 09:38:58,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 09:38:58,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:38:58" (1/1) ... [2020-10-12 09:38:58,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@445b6256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:38:58, skipping insertion in model container [2020-10-12 09:38:58,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:38:58" (1/1) ... [2020-10-12 09:38:58,331 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 09:38:58,350 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 09:38:58,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 09:38:58,548 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 09:38:58,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 09:38:58,584 INFO L208 MainTranslator]: Completed translation [2020-10-12 09:38:58,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:38:58 WrapperNode [2020-10-12 09:38:58,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 09:38:58,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 09:38:58,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 09:38:58,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 09:38:58,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:38:58" (1/1) ... [2020-10-12 09:38:58,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:38:58" (1/1) ... [2020-10-12 09:38:58,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:38:58" (1/1) ... [2020-10-12 09:38:58,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:38:58" (1/1) ... [2020-10-12 09:38:58,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:38:58" (1/1) ... [2020-10-12 09:38:58,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:38:58" (1/1) ... [2020-10-12 09:38:58,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:38:58" (1/1) ... [2020-10-12 09:38:58,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 09:38:58,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 09:38:58,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 09:38:58,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 09:38:58,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:38:58" (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 09:38:58,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 09:38:58,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 09:38:58,771 INFO L138 BoogieDeclarations]: Found implementation of procedure mapsum [2020-10-12 09:38:58,771 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 09:38:58,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 09:38:58,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 09:38:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure mapsum [2020-10-12 09:38:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 09:38:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 09:38:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 09:38:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 09:38:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 09:38:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 09:38:58,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 09:38:59,110 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 09:38:59,112 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-12 09:38:59,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:38:59 BoogieIcfgContainer [2020-10-12 09:38:59,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 09:38:59,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 09:38:59,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 09:38:59,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 09:38:59,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:38:58" (1/3) ... [2020-10-12 09:38:59,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1278533d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:38:59, skipping insertion in model container [2020-10-12 09:38:59,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:38:58" (2/3) ... [2020-10-12 09:38:59,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1278533d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:38:59, skipping insertion in model container [2020-10-12 09:38:59,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:38:59" (3/3) ... [2020-10-12 09:38:59,124 INFO L109 eAbstractionObserver]: Analyzing ICFG mapsum5.i [2020-10-12 09:38:59,134 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 09:38:59,140 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 09:38:59,154 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 09:38:59,177 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 09:38:59,177 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 09:38:59,178 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 09:38:59,178 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 09:38:59,178 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 09:38:59,178 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 09:38:59,178 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 09:38:59,178 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 09:38:59,197 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-12 09:38:59,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 09:38:59,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:59,205 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:38:59,205 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:59,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:59,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1089041636, now seen corresponding path program 1 times [2020-10-12 09:38:59,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:59,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990910015] [2020-10-12 09:38:59,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:59,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:59,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:59,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:59,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:59,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:00,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:00,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:01,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:01,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 09:39:01,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 09:39:01,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1870 [2020-10-12 09:39:01,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:01,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 09:39:01,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 09:39:01,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 09:39:01,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 09:39:01,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:39:01,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:01,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:01,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:01,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:39:01,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:01,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:39:01,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:01,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:39:01,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:01,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:39:01,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:39:01,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 09:39:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:01,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:01,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:01,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 09:39:01,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:01,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 09:39:01,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:01,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:39:01,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:01,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:39:01,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:39:01,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 09:39:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:01,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:01,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:01,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 09:39:01,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:01,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 09:39:01,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:01,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:39:01,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:01,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 09:39:01,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:01,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 09:39:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:01,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:01,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:01,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 09:39:01,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:01,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 09:39:01,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:01,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:39:01,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:01,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 09:39:01,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:01,571 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 09:39:01,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990910015] [2020-10-12 09:39:01,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 09:39:01,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 09:39:01,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669887622] [2020-10-12 09:39:01,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 09:39:01,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:39:01,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 09:39:01,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-12 09:39:01,598 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 11 states. [2020-10-12 09:39:01,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:39:01,935 INFO L93 Difference]: Finished difference Result 90 states and 128 transitions. [2020-10-12 09:39:01,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 09:39:01,937 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-12 09:39:01,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:39:01,948 INFO L225 Difference]: With dead ends: 90 [2020-10-12 09:39:01,949 INFO L226 Difference]: Without dead ends: 51 [2020-10-12 09:39:01,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-10-12 09:39:01,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-12 09:39:02,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 38. [2020-10-12 09:39:02,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-12 09:39:02,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2020-10-12 09:39:02,008 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 49 transitions. Word has length 33 [2020-10-12 09:39:02,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:39:02,009 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 49 transitions. [2020-10-12 09:39:02,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 09:39:02,009 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 49 transitions. [2020-10-12 09:39:02,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-12 09:39:02,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:39:02,012 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:39:02,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 09:39:02,013 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:39:02,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:39:02,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1405196894, now seen corresponding path program 1 times [2020-10-12 09:39:02,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:39:02,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260252323] [2020-10-12 09:39:02,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:39:02,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:02,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:02,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:02,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:02,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:02,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:02,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:02,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:03,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:03,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 09:39:03,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 09:39:03,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1572 [2020-10-12 09:39:03,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:03,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:39:03,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-12 09:39:03,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 09:39:03,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:39:03,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:39:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:03,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:03,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:03,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:39:03,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:03,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:39:03,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:03,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:39:03,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:03,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:39:03,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:03,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 09:39:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:03,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:03,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:03,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 09:39:03,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:03,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 09:39:03,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:03,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:39:03,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:03,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:39:03,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:03,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 09:39:03,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:03,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:03,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:03,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 09:39:03,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:03,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 09:39:03,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:03,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 09:39:03,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:03,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 09:39:03,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:03,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 09:39:03,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:03,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:03,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:03,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 09:39:03,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:03,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 09:39:03,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:03,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 09:39:03,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:03,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 09:39:03,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:03,711 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 09:39:03,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260252323] [2020-10-12 09:39:03,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:39:03,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 09:39:03,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023993934] [2020-10-12 09:39:03,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 09:39:03,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:39:03,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 09:39:03,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 09:39:03,715 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand 7 states. [2020-10-12 09:39:03,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:39:03,883 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-10-12 09:39:03,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 09:39:03,884 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-10-12 09:39:03,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:39:03,885 INFO L225 Difference]: With dead ends: 55 [2020-10-12 09:39:03,885 INFO L226 Difference]: Without dead ends: 29 [2020-10-12 09:39:03,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-12 09:39:03,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-12 09:39:03,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-12 09:39:03,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-12 09:39:03,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-12 09:39:03,894 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 35 [2020-10-12 09:39:03,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:39:03,894 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-12 09:39:03,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 09:39:03,894 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-12 09:39:03,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 09:39:03,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:39:03,896 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:39:03,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 09:39:03,896 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:39:03,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:39:03,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1520877022, now seen corresponding path program 2 times [2020-10-12 09:39:03,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:39:03,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279358705] [2020-10-12 09:39:03,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:39:03,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:03,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:03,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:03,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:03,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:04,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:05,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:05,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-12 09:39:05,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:39:05,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1488 [2020-10-12 09:39:05,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:05,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:39:05,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 09:39:05,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 09:39:05,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:05,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:39:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:05,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:05,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:05,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:39:05,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:05,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:39:05,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:05,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:39:05,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:05,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:39:05,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:05,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 09:39:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:05,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:05,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:05,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 09:39:05,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:05,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 09:39:05,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:05,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:39:05,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:05,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 09:39:05,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:05,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-12 09:39:05,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:05,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:05,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:05,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 09:39:05,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:05,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 09:39:05,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:05,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:39:05,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-12 09:39:05,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:39:05,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:39:05,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 09:39:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:05,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:05,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:05,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 09:39:05,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:05,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 09:39:05,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:05,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:39:05,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-12 09:39:05,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:39:05,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:39:05,508 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-12 09:39:05,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279358705] [2020-10-12 09:39:05,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:39:05,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 09:39:05,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126348303] [2020-10-12 09:39:05,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 09:39:05,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:39:05,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 09:39:05,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 09:39:05,511 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-10-12 09:39:05,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:39:05,676 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2020-10-12 09:39:05,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 09:39:05,676 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-10-12 09:39:05,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:39:05,678 INFO L225 Difference]: With dead ends: 49 [2020-10-12 09:39:05,678 INFO L226 Difference]: Without dead ends: 31 [2020-10-12 09:39:05,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-12 09:39:05,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-12 09:39:05,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-10-12 09:39:05,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-12 09:39:05,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-12 09:39:05,685 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 39 [2020-10-12 09:39:05,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:39:05,686 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-12 09:39:05,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 09:39:05,686 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-12 09:39:05,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-12 09:39:05,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:39:05,687 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:39:05,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 09:39:05,688 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:39:05,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:39:05,688 INFO L82 PathProgramCache]: Analyzing trace with hash 132160544, now seen corresponding path program 3 times [2020-10-12 09:39:05,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:39:05,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284809540] [2020-10-12 09:39:05,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:39:05,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:05,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:05,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:05,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:06,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:06,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:08,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:08,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-12 09:39:08,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:39:08,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3222 [2020-10-12 09:39:08,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:08,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:39:08,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-12 09:39:08,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 09:39:08,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:39:08,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:39:08,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:08,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:08,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:08,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:39:08,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:08,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:39:08,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:08,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:39:08,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:08,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:39:08,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:08,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 09:39:08,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:08,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:08,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:08,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 09:39:08,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:08,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 09:39:08,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:08,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:39:08,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:08,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:39:08,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:08,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 09:39:08,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:08,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:09,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:09,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 09:39:09,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:09,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 09:39:09,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:09,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:39:09,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:09,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 09:39:09,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:39:09,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 09:39:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:09,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:09,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:09,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 09:39:09,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:09,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 09:39:09,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:09,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:39:09,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 09:39:09,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:39:09,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:39:09,068 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 17 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-12 09:39:09,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284809540] [2020-10-12 09:39:09,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:39:09,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 09:39:09,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022855186] [2020-10-12 09:39:09,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 09:39:09,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:39:09,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 09:39:09,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 09:39:09,071 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 7 states. [2020-10-12 09:39:09,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:39:09,242 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2020-10-12 09:39:09,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 09:39:09,243 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2020-10-12 09:39:09,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:39:09,244 INFO L225 Difference]: With dead ends: 46 [2020-10-12 09:39:09,244 INFO L226 Difference]: Without dead ends: 31 [2020-10-12 09:39:09,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-12 09:39:09,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-12 09:39:09,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-12 09:39:09,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-12 09:39:09,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-12 09:39:09,252 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 45 [2020-10-12 09:39:09,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:39:09,252 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-12 09:39:09,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 09:39:09,253 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-12 09:39:09,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-12 09:39:09,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:39:09,254 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:39:09,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 09:39:09,255 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:39:09,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:39:09,255 INFO L82 PathProgramCache]: Analyzing trace with hash 26387134, now seen corresponding path program 1 times [2020-10-12 09:39:09,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:39:09,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712490146] [2020-10-12 09:39:09,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:39:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:09,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:09,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:10,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:11,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:12,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:13,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:14,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:14,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 09:39:14,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 09:39:14,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 09:39:14,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:14,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 09:39:14,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 09:39:14,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-12 09:39:14,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:15,197 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 58 [2020-10-12 09:39:15,333 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 34 [2020-10-12 09:39:15,879 WARN L193 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 84 [2020-10-12 09:39:17,105 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 160 DAG size of output: 57 [2020-10-12 09:39:17,930 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 48 [2020-10-12 09:39:18,122 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 35 [2020-10-12 09:39:18,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:39:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:18,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:18,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:18,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:39:18,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:18,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 09:39:18,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:18,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:39:18,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:18,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:39:18,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:18,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 09:39:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:18,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:18,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:18,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 09:39:18,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:18,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-12 09:39:18,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:18,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 09:39:18,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:18,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 09:39:18,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:19,185 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-10-12 09:39:19,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 09:39:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:19,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:19,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:20,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:20,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 09:39:20,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:39:20,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1057 [2020-10-12 09:39:20,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:20,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 09:39:20,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:20,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 09:39:20,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:20,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 09:39:20,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:21,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:21,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:21,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 09:39:21,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:21,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-12 09:39:21,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:21,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 09:39:21,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:21,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 09:39:21,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:21,622 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 2 proven. 54 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 09:39:21,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712490146] [2020-10-12 09:39:21,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:39:21,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-12 09:39:21,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631926478] [2020-10-12 09:39:21,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-12 09:39:21,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:39:21,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-12 09:39:21,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=540, Unknown=0, NotChecked=0, Total=600 [2020-10-12 09:39:21,627 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 25 states. [2020-10-12 09:39:26,876 WARN L193 SmtUtils]: Spent 2.17 s on a formula simplification that was a NOOP. DAG size: 61 [2020-10-12 09:39:27,807 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2020-10-12 09:39:42,803 WARN L193 SmtUtils]: Spent 14.60 s on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2020-10-12 09:39:44,974 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse13 (* c_main_~i~2 4)) (.cse12 (select |c_#memory_int| |c_main_~#x~0.base|)) (.cse14 (+ (* c_~N~0 4) |c_main_~#x~0.offset| (- 4)))) (let ((.cse10 (store .cse12 .cse14 c_main_~temp~0)) (.cse6 (select .cse12 (+ .cse13 |c_main_~#x~0.offset| 4))) (.cse11 (+ |c_main_~#x~0.offset| 4))) (let ((.cse7 (select (store (store .cse12 (+ .cse13 |c_main_~#x~0.offset|) .cse6) .cse14 c_main_~temp~0) .cse11)) (.cse4 (select .cse10 .cse11)) (.cse3 (select .cse10 |c_main_~#x~0.offset|))) (let ((.cse0 (* .cse3 (- 1))) (.cse2 (* .cse4 (- 1))) (.cse5 (+ c_main_~ret2~0 4294967295)) (.cse1 (* c_~N~0 (- 1))) (.cse8 (* .cse6 (- 1))) (.cse9 (* .cse7 (- 1)))) (and (= (+ (* 4294967296 (div (+ .cse0 .cse1 .cse2 6442450944) 4294967296)) .cse3 .cse4) .cse5) (<= 2147483647 (+ .cse6 .cse7 (* 4294967296 (div (+ .cse8 c_main_~ret~1 .cse9 4294967295) 4294967296)))) (<= 2147483647 (+ .cse3 (* 4294967296 (div (+ .cse0 .cse2 c_main_~ret~1 4294967295) 4294967296)) .cse4)) (<= c_~N~0 2) (<= (+ .cse6 (* 4294967296 (div (+ .cse8 c_main_~ret~1 .cse9 8589934590) 4294967296)) .cse7) 6442450942) (<= 2 c_~N~0) (<= (+ .cse3 .cse4 (* 4294967296 (div (+ .cse0 .cse2 c_main_~ret~1 8589934590) 4294967296))) 6442450942) (= .cse5 (+ .cse6 (* 4294967296 (div (+ .cse1 .cse8 .cse9 6442450944) 4294967296)) .cse7)) (= (* 4 c_main_~i~2) 0)))))) is different from false [2020-10-12 09:39:47,569 WARN L193 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-10-12 09:39:50,160 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2020-10-12 09:40:11,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:40:11,317 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2020-10-12 09:40:11,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 09:40:11,388 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 47 [2020-10-12 09:40:11,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:40:11,394 INFO L225 Difference]: With dead ends: 50 [2020-10-12 09:40:11,394 INFO L226 Difference]: Without dead ends: 46 [2020-10-12 09:40:11,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 44.4s TimeCoverageRelationStatistics Valid=151, Invalid=1255, Unknown=4, NotChecked=72, Total=1482 [2020-10-12 09:40:11,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-12 09:40:11,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-10-12 09:40:11,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-12 09:40:11,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2020-10-12 09:40:11,412 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 47 [2020-10-12 09:40:11,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:40:11,412 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2020-10-12 09:40:11,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-12 09:40:11,412 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2020-10-12 09:40:11,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-12 09:40:11,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:40:11,414 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 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 09:40:11,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 09:40:11,414 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:40:11,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:40:11,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1457355228, now seen corresponding path program 2 times [2020-10-12 09:40:11,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:40:11,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797361401] [2020-10-12 09:40:11,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:40:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:11,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:11,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:11,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:11,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:16,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:16,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 09:40:16,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:40:16,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 09:40:16,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:16,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 09:40:16,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-12 09:40:16,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 09:40:16,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:40:16,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:40:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:16,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:16,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:16,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:40:16,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:16,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:40:16,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:16,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:40:16,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:40:16,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:40:16,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:16,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 09:40:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:16,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:16,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:16,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 09:40:16,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:16,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 09:40:16,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:16,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:40:16,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:40:16,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:40:16,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:16,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 09:40:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:16,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:16,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:16,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 09:40:16,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:16,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 09:40:16,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:16,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:40:16,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:40:16,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:40:16,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:16,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 09:40:16,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:16,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:16,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:16,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 09:40:16,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:16,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 09:40:16,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:16,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:40:16,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:40:16,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 09:40:16,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:16,562 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 33 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-12 09:40:16,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797361401] [2020-10-12 09:40:16,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:40:16,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 09:40:16,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678547654] [2020-10-12 09:40:16,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 09:40:16,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:40:16,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 09:40:16,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-12 09:40:16,566 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand 10 states. [2020-10-12 09:40:17,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:40:17,144 INFO L93 Difference]: Finished difference Result 108 states and 127 transitions. [2020-10-12 09:40:17,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 09:40:17,145 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 49 [2020-10-12 09:40:17,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:40:17,147 INFO L225 Difference]: With dead ends: 108 [2020-10-12 09:40:17,148 INFO L226 Difference]: Without dead ends: 86 [2020-10-12 09:40:17,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2020-10-12 09:40:17,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-12 09:40:17,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 76. [2020-10-12 09:40:17,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-12 09:40:17,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 91 transitions. [2020-10-12 09:40:17,188 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 91 transitions. Word has length 49 [2020-10-12 09:40:17,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:40:17,189 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 91 transitions. [2020-10-12 09:40:17,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 09:40:17,190 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 91 transitions. [2020-10-12 09:40:17,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-12 09:40:17,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:40:17,194 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:40:17,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 09:40:17,195 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:40:17,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:40:17,195 INFO L82 PathProgramCache]: Analyzing trace with hash 592173116, now seen corresponding path program 3 times [2020-10-12 09:40:17,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:40:17,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979836234] [2020-10-12 09:40:17,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:40:17,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:17,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:17,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:17,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:17,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:22,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:22,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 09:40:22,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:40:22,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 09:40:22,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:22,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 09:40:22,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 09:40:22,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 09:40:22,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:22,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:40:22,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:22,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:22,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:22,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:40:22,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:22,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:40:22,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:22,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:40:22,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:40:22,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:40:22,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:22,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 09:40:22,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:22,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:22,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:22,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 09:40:22,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:22,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 09:40:22,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:22,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:40:22,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:40:22,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 09:40:22,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:22,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 09:40:22,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:22,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:22,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:22,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:22,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 09:40:22,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:40:22,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 09:40:22,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:22,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:40:22,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:40:22,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 09:40:22,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:22,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 09:40:22,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:22,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:22,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:22,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 09:40:22,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:22,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 09:40:22,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:22,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:40:22,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:40:22,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 09:40:22,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:22,414 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 8 proven. 59 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-12 09:40:22,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979836234] [2020-10-12 09:40:22,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:40:22,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 09:40:22,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720793503] [2020-10-12 09:40:22,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 09:40:22,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:40:22,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 09:40:22,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-12 09:40:22,416 INFO L87 Difference]: Start difference. First operand 76 states and 91 transitions. Second operand 11 states. [2020-10-12 09:40:22,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:40:22,884 INFO L93 Difference]: Finished difference Result 97 states and 112 transitions. [2020-10-12 09:40:22,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 09:40:22,884 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-10-12 09:40:22,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:40:22,885 INFO L225 Difference]: With dead ends: 97 [2020-10-12 09:40:22,885 INFO L226 Difference]: Without dead ends: 56 [2020-10-12 09:40:22,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2020-10-12 09:40:22,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-12 09:40:22,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48. [2020-10-12 09:40:22,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-12 09:40:22,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2020-10-12 09:40:22,894 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 49 [2020-10-12 09:40:22,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:40:22,895 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2020-10-12 09:40:22,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 09:40:22,895 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2020-10-12 09:40:22,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-12 09:40:22,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:40:22,896 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:40:22,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 09:40:22,897 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:40:22,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:40:22,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1009060164, now seen corresponding path program 4 times [2020-10-12 09:40:22,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:40:22,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852857996] [2020-10-12 09:40:22,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:40:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:22,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:22,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:22,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:23,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:27,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:27,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-12 09:40:27,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:40:27,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 09:40:27,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:27,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 09:40:27,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-12 09:40:27,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 09:40:27,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:27,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:40:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:27,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:27,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:27,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:40:27,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:27,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:40:27,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:27,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:40:27,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:40:27,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:40:27,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:27,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 09:40:27,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:27,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:27,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:27,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 09:40:27,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:27,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 09:40:27,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:27,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:40:27,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:40:27,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:40:27,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:27,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-12 09:40:27,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:27,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:27,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:27,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 09:40:27,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:27,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 09:40:27,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:27,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:40:27,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:40:27,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 09:40:27,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:28,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 09:40:28,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:28,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:28,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:28,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 09:40:28,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:28,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 09:40:28,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:28,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:40:28,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 09:40:28,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:40:28,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:28,019 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 32 proven. 34 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-12 09:40:28,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852857996] [2020-10-12 09:40:28,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:40:28,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 09:40:28,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724312204] [2020-10-12 09:40:28,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 09:40:28,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:40:28,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 09:40:28,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-12 09:40:28,022 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand 9 states. [2020-10-12 09:40:28,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:40:28,382 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2020-10-12 09:40:28,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 09:40:28,383 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-10-12 09:40:28,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:40:28,384 INFO L225 Difference]: With dead ends: 69 [2020-10-12 09:40:28,384 INFO L226 Difference]: Without dead ends: 52 [2020-10-12 09:40:28,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2020-10-12 09:40:28,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-12 09:40:28,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2020-10-12 09:40:28,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-12 09:40:28,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-10-12 09:40:28,395 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 53 [2020-10-12 09:40:28,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:40:28,397 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-10-12 09:40:28,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 09:40:28,397 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-10-12 09:40:28,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 09:40:28,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:40:28,399 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 2, 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 09:40:28,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 09:40:28,400 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:40:28,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:40:28,400 INFO L82 PathProgramCache]: Analyzing trace with hash 176086618, now seen corresponding path program 5 times [2020-10-12 09:40:28,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:40:28,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373579386] [2020-10-12 09:40:28,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:40:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:28,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:28,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:29,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:29,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:31,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:31,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:32,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:33,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:33,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-12 09:40:33,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 09:40:33,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5248 [2020-10-12 09:40:33,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:33,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-12 09:40:33,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 09:40:33,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 09:40:33,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:40:34,783 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 64 [2020-10-12 09:40:35,338 WARN L193 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 68 [2020-10-12 09:40:35,786 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 47 [2020-10-12 09:40:36,373 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 74 [2020-10-12 09:40:36,959 WARN L193 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 61 [2020-10-12 09:40:37,807 WARN L193 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 74 [2020-10-12 09:40:42,706 WARN L193 SmtUtils]: Spent 2.69 s on a formula simplification. DAG size of input: 104 DAG size of output: 73 [2020-10-12 09:40:43,221 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2020-10-12 09:40:43,578 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2020-10-12 09:40:43,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:40:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:43,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:43,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:43,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:40:43,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:43,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:40:43,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:43,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:40:43,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:40:43,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:40:43,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:43,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 09:40:43,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:43,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:43,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:44,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:44,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:44,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 09:40:44,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:40:44,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-12 09:40:44,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:44,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 09:40:44,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:40:44,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 09:40:44,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:51,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-12 09:40:51,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:51,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:51,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:51,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 09:40:51,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:51,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-12 09:40:51,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:51,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 09:40:51,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:40:51,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 09:40:51,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:55,907 WARN L193 SmtUtils]: Spent 3.33 s on a formula simplification. DAG size of input: 91 DAG size of output: 51 [2020-10-12 09:40:55,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 09:40:55,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:40:55,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:40:56,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:40:56,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 09:40:56,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:40:56,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-12 09:40:56,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:40:56,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 09:40:56,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:40:56,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 09:40:56,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:40:57,023 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 5 proven. 107 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 09:40:57,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373579386] [2020-10-12 09:40:57,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:40:57,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-12 09:40:57,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461779955] [2020-10-12 09:40:57,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-12 09:40:57,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:40:57,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-12 09:40:57,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=1102, Unknown=4, NotChecked=0, Total=1190 [2020-10-12 09:40:57,026 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 35 states. [2020-10-12 09:40:57,633 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-12 09:41:33,133 WARN L193 SmtUtils]: Spent 31.38 s on a formula simplification. DAG size of input: 146 DAG size of output: 79 [2020-10-12 09:41:42,709 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 89 [2020-10-12 09:42:04,033 WARN L193 SmtUtils]: Spent 10.92 s on a formula simplification. DAG size of input: 154 DAG size of output: 99 [2020-10-12 09:42:13,429 WARN L193 SmtUtils]: Spent 8.94 s on a formula simplification. DAG size of input: 153 DAG size of output: 98 [2020-10-12 09:42:25,049 WARN L193 SmtUtils]: Spent 7.13 s on a formula simplification. DAG size of input: 110 DAG size of output: 102 [2020-10-12 09:42:36,024 WARN L193 SmtUtils]: Spent 10.25 s on a formula simplification. DAG size of input: 138 DAG size of output: 114 [2020-10-12 09:42:38,666 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse15 (select |c_#memory_int| |c_main_~#x~0.base|))) (let ((.cse16 (+ |c_main_~#x~0.offset| 4)) (.cse21 (store .cse15 (+ (* c_~N~0 4) |c_main_~#x~0.offset| (- 4)) c_main_~temp~0))) (let ((.cse6 (select .cse21 |c_main_~#x~0.offset|)) (.cse7 (select .cse21 .cse16))) (let ((.cse8 (* c_main_~ret~1 (- 1))) (.cse5 (+ .cse6 .cse7 c_main_~temp~0))) (let ((.cse4 (<= .cse5 (+ (* 4294967296 (div (+ .cse6 .cse7 c_main_~temp~0 (- 2147483645)) 4294967296)) 4294967292))) (.cse9 (= (* 4 c_~N~0) 12)) (.cse0 (= c_main_~ret~1 c_main_~ret2~0)) (.cse1 (* 4294967296 (div (+ .cse6 .cse7 c_main_~temp~0 2147483651) 4294967296))) (.cse3 (* 4294967296 (div (+ .cse6 .cse7 c_main_~temp~0 .cse8 4294967298) 4294967296)))) (and (let ((.cse2 (+ .cse6 .cse7 c_main_~temp~0 3))) (or (and .cse0 (<= (+ .cse1 c_main_~ret~1) .cse2) (<= .cse3 .cse2)) (and .cse0 .cse4 (<= .cse5 (+ (* 4294967296 (div .cse2 4294967296)) c_main_~ret~1 4294967293)) (<= .cse5 (+ (* 4294967296 (div (+ .cse6 .cse7 c_main_~temp~0 .cse8 (- 4294967293)) 4294967296)) 4294967292))))) .cse9 (let ((.cse10 (select .cse15 .cse16)) (.cse11 (select .cse15 |c_main_~#x~0.offset|)) (.cse12 (select .cse15 (+ |c_main_~#x~0.offset| 8)))) (let ((.cse13 (+ .cse10 .cse11 .cse12 3))) (or (and (<= (+ (* 4294967296 (div (+ .cse10 .cse11 .cse12 2147483651) 4294967296)) c_main_~ret~1) .cse13) .cse0 (<= (* 4294967296 (div (+ .cse10 .cse11 .cse12 .cse8 4294967298) 4294967296)) .cse13)) (let ((.cse14 (+ .cse10 .cse12 .cse11))) (and (<= .cse14 (+ (* 4294967296 (div (+ .cse10 .cse11 .cse12 .cse8 (- 4294967293)) 4294967296)) 4294967292)) (<= .cse14 (+ (* 4294967296 (div (+ .cse10 .cse11 .cse12 (- 2147483645)) 4294967296)) 4294967292)) .cse0 (<= (* 4294967296 (div (+ .cse10 .cse11 .cse12 .cse8 2) 4294967296)) .cse13)))))) (or (let ((.cse17 (* c_main_~i~2 (- 2))) (.cse18 (* c_~N~0 2))) (and .cse9 .cse0 .cse4 (<= .cse5 (+ (* 4294967296 (div (+ .cse17 .cse6 .cse18 .cse7 c_main_~temp~0 .cse8 (- 4294967295)) 4294967296)) 4294967292)) (<= .cse5 (+ (* 4294967296 (div (+ .cse17 .cse6 .cse18 .cse7 c_main_~temp~0 1) 4294967296)) c_main_~ret~1 4294967293)))) (let ((.cse19 (* 2 c_main_~i~2)) (.cse20 (+ .cse6 (* 2 c_~N~0) .cse7 c_main_~temp~0 1))) (and .cse9 .cse0 (<= (+ .cse1 .cse19 c_main_~ret~1) .cse20) (<= (+ .cse19 .cse3) .cse20))) (<= (+ c_main_~i~2 2) c_~N~0)))))))) is different from false [2020-10-12 09:42:38,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:42:38,927 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2020-10-12 09:42:38,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 09:42:38,928 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 55 [2020-10-12 09:42:38,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:42:38,930 INFO L225 Difference]: With dead ends: 73 [2020-10-12 09:42:38,930 INFO L226 Difference]: Without dead ends: 69 [2020-10-12 09:42:38,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 108.3s TimeCoverageRelationStatistics Valid=196, Invalid=2348, Unknown=10, NotChecked=98, Total=2652 [2020-10-12 09:42:38,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-12 09:42:38,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66. [2020-10-12 09:42:38,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-12 09:42:38,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2020-10-12 09:42:38,945 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 55 [2020-10-12 09:42:38,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:42:38,945 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2020-10-12 09:42:38,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-12 09:42:38,946 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2020-10-12 09:42:38,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 09:42:38,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:42:38,947 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:42:38,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 09:42:38,947 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:42:38,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:42:38,948 INFO L82 PathProgramCache]: Analyzing trace with hash 935810680, now seen corresponding path program 6 times [2020-10-12 09:42:38,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:42:38,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600772904] [2020-10-12 09:42:38,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:42:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:38,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:38,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:38,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:39,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:43,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:43,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-12 09:42:43,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:42:43,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 09:42:43,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:43,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 09:42:43,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-12 09:42:43,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 09:42:43,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:42:44,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:42:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:44,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:44,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:44,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:42:44,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:42:44,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:42:44,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:44,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:42:44,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:42:44,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:42:44,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:42:44,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 09:42:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:44,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:44,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:44,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 09:42:44,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:42:44,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 09:42:44,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:44,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:42:44,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:42:44,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:42:44,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:42:44,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-12 09:42:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:44,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:44,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:44,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 09:42:44,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:42:44,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 09:42:44,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:44,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 09:42:44,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:42:44,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 09:42:44,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:42:44,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 09:42:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:44,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:44,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:44,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 09:42:44,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:42:44,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 09:42:44,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:44,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:42:44,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 09:42:44,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:42:44,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:42:44,198 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 37 proven. 37 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-12 09:42:44,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600772904] [2020-10-12 09:42:44,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:42:44,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 09:42:44,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701956905] [2020-10-12 09:42:44,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 09:42:44,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:42:44,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 09:42:44,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-12 09:42:44,202 INFO L87 Difference]: Start difference. First operand 66 states and 77 transitions. Second operand 11 states. [2020-10-12 09:42:44,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:42:44,911 INFO L93 Difference]: Finished difference Result 130 states and 147 transitions. [2020-10-12 09:42:44,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 09:42:44,913 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-12 09:42:44,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:42:44,916 INFO L225 Difference]: With dead ends: 130 [2020-10-12 09:42:44,917 INFO L226 Difference]: Without dead ends: 106 [2020-10-12 09:42:44,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2020-10-12 09:42:44,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-12 09:42:44,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 100. [2020-10-12 09:42:44,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-12 09:42:44,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-10-12 09:42:44,972 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 57 [2020-10-12 09:42:44,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:42:44,975 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-10-12 09:42:44,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 09:42:44,975 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-10-12 09:42:44,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 09:42:44,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:42:44,977 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 3, 3, 3, 3, 2, 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 09:42:44,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 09:42:44,978 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:42:44,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:42:44,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1575510824, now seen corresponding path program 7 times [2020-10-12 09:42:44,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:42:44,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560077040] [2020-10-12 09:42:44,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:42:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:44,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:45,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:45,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:45,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:49,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:49,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-12 09:42:49,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:42:49,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 09:42:49,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:49,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 09:42:49,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 09:42:49,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 09:42:49,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:50,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:42:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:50,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:50,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:50,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:42:50,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:42:50,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:42:50,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:50,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:42:50,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:42:50,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:42:50,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:50,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 09:42:50,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:50,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:50,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:50,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 09:42:50,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:42:50,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 09:42:50,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:50,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 09:42:50,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:42:50,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 09:42:50,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:50,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-12 09:42:50,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:50,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:50,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:50,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:50,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 09:42:50,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:42:50,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 09:42:50,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:50,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 09:42:50,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:42:50,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 09:42:50,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:50,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 09:42:50,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:50,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:50,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:50,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 09:42:50,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:42:50,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 09:42:50,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:50,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 09:42:50,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:42:50,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 09:42:50,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:50,199 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 18 proven. 104 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-12 09:42:50,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560077040] [2020-10-12 09:42:50,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:42:50,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 09:42:50,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918185529] [2020-10-12 09:42:50,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 09:42:50,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:42:50,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 09:42:50,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-12 09:42:50,202 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 13 states. [2020-10-12 09:42:50,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:42:50,999 INFO L93 Difference]: Finished difference Result 128 states and 141 transitions. [2020-10-12 09:42:51,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 09:42:51,000 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2020-10-12 09:42:51,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:42:51,002 INFO L225 Difference]: With dead ends: 128 [2020-10-12 09:42:51,002 INFO L226 Difference]: Without dead ends: 60 [2020-10-12 09:42:51,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2020-10-12 09:42:51,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-12 09:42:51,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 50. [2020-10-12 09:42:51,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-12 09:42:51,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-10-12 09:42:51,020 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 57 [2020-10-12 09:42:51,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:42:51,021 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-10-12 09:42:51,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 09:42:51,021 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-10-12 09:42:51,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-12 09:42:51,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:42:51,022 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 2, 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 09:42:51,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 09:42:51,022 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:42:51,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:42:51,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1918086232, now seen corresponding path program 8 times [2020-10-12 09:42:51,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:42:51,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284844342] [2020-10-12 09:42:51,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:42:51,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:51,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:51,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:51,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:51,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:56,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:56,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 09:42:56,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:42:56,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 09:42:56,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:56,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 09:42:56,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 09:42:56,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 09:42:56,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:56,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:42:56,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:56,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:56,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:56,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:42:56,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:42:56,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:42:56,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:56,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:42:56,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:42:56,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:42:56,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:56,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 09:42:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:56,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:56,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:56,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 09:42:56,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:42:56,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 09:42:56,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:56,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:42:56,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:42:56,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:42:56,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:56,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 09:42:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:56,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:56,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:56,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 09:42:56,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:42:56,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 09:42:56,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:56,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 09:42:56,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:42:56,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 09:42:56,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:56,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 09:42:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:56,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:56,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:42:56,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 09:42:56,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:42:56,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 09:42:56,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:42:56,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:42:56,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 09:42:56,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:42:56,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:42:56,277 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 53 proven. 55 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-12 09:42:56,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284844342] [2020-10-12 09:42:56,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:42:56,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 09:42:56,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143016264] [2020-10-12 09:42:56,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 09:42:56,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:42:56,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 09:42:56,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-12 09:42:56,280 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 11 states. [2020-10-12 09:42:56,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:42:56,883 INFO L93 Difference]: Finished difference Result 79 states and 84 transitions. [2020-10-12 09:42:56,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 09:42:56,885 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 61 [2020-10-12 09:42:56,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:42:56,887 INFO L225 Difference]: With dead ends: 79 [2020-10-12 09:42:56,887 INFO L226 Difference]: Without dead ends: 60 [2020-10-12 09:42:56,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2020-10-12 09:42:56,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-12 09:42:56,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2020-10-12 09:42:56,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-12 09:42:56,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-10-12 09:42:56,898 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 61 [2020-10-12 09:42:56,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:42:56,899 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-10-12 09:42:56,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 09:42:56,899 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-10-12 09:42:56,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 09:42:56,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:42:56,900 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:42:56,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 09:42:56,900 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:42:56,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:42:56,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1352185078, now seen corresponding path program 9 times [2020-10-12 09:42:56,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:42:56,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803459709] [2020-10-12 09:42:56,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:42:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:42:56,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:56,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:42:58,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:00,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:01,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:43:01,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 09:43:01,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:43:01,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 09:43:01,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:43:01,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 47 [2020-10-12 09:43:01,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 09:43:01,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 09:43:01,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0