/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/bitvector/byte_add_2-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 10:32:22,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 10:32:22,106 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 10:32:22,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 10:32:22,137 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 10:32:22,138 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 10:32:22,139 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 10:32:22,141 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 10:32:22,143 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 10:32:22,144 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 10:32:22,145 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 10:32:22,146 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 10:32:22,146 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 10:32:22,147 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 10:32:22,148 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 10:32:22,149 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 10:32:22,150 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 10:32:22,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 10:32:22,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 10:32:22,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 10:32:22,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 10:32:22,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 10:32:22,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 10:32:22,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 10:32:22,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 10:32:22,163 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 10:32:22,163 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 10:32:22,164 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 10:32:22,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 10:32:22,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 10:32:22,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 10:32:22,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 10:32:22,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 10:32:22,168 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 10:32:22,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 10:32:22,169 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 10:32:22,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 10:32:22,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 10:32:22,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 10:32:22,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 10:32:22,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 10:32:22,173 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 10:32:22,195 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 10:32:22,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 10:32:22,196 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 10:32:22,197 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 10:32:22,197 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 10:32:22,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 10:32:22,197 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 10:32:22,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 10:32:22,197 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 10:32:22,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 10:32:22,198 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 10:32:22,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 10:32:22,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 10:32:22,198 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 10:32:22,199 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 10:32:22,199 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 10:32:22,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 10:32:22,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 10:32:22,199 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 10:32:22,199 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 10:32:22,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 10:32:22,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 10:32:22,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 10:32:22,200 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 10:32:22,201 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 10:32:22,201 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 10:32:22,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 10:32:22,201 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 10:32:22,201 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 10:32:22,201 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 10:32:22,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 10:32:22,490 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 10:32:22,493 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 10:32:22,495 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 10:32:22,495 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 10:32:22,496 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/byte_add_2-2.i [2020-10-12 10:32:22,553 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3126fc4a2/36182445d2c644a9b0f6eff974fade73/FLAG03dfa17bc [2020-10-12 10:32:23,016 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 10:32:23,017 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/byte_add_2-2.i [2020-10-12 10:32:23,023 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3126fc4a2/36182445d2c644a9b0f6eff974fade73/FLAG03dfa17bc [2020-10-12 10:32:23,376 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3126fc4a2/36182445d2c644a9b0f6eff974fade73 [2020-10-12 10:32:23,384 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 10:32:23,386 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 10:32:23,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 10:32:23,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 10:32:23,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 10:32:23,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:32:23" (1/1) ... [2020-10-12 10:32:23,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3666d953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:23, skipping insertion in model container [2020-10-12 10:32:23,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:32:23" (1/1) ... [2020-10-12 10:32:23,402 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 10:32:23,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 10:32:23,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:32:23,628 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 10:32:23,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:32:23,684 INFO L208 MainTranslator]: Completed translation [2020-10-12 10:32:23,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:23 WrapperNode [2020-10-12 10:32:23,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 10:32:23,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 10:32:23,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 10:32:23,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 10:32:23,799 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:23" (1/1) ... [2020-10-12 10:32:23,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:23" (1/1) ... [2020-10-12 10:32:23,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:23" (1/1) ... [2020-10-12 10:32:23,823 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:23" (1/1) ... [2020-10-12 10:32:23,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:23" (1/1) ... [2020-10-12 10:32:23,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:23" (1/1) ... [2020-10-12 10:32:23,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:23" (1/1) ... [2020-10-12 10:32:23,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 10:32:23,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 10:32:23,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 10:32:23,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 10:32:23,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:23" (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 10:32:23,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 10:32:23,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 10:32:23,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 10:32:23,929 INFO L138 BoogieDeclarations]: Found implementation of procedure mp_add [2020-10-12 10:32:23,929 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 10:32:23,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 10:32:23,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-12 10:32:23,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 10:32:23,930 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-12 10:32:23,930 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-12 10:32:23,930 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-12 10:32:23,930 INFO L130 BoogieDeclarations]: Found specification of procedure mp_add [2020-10-12 10:32:23,930 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 10:32:23,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 10:32:23,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 10:32:24,280 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 10:32:24,281 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-12 10:32:24,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:32:24 BoogieIcfgContainer [2020-10-12 10:32:24,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 10:32:24,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 10:32:24,287 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 10:32:24,290 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 10:32:24,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 10:32:23" (1/3) ... [2020-10-12 10:32:24,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7476c56c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:32:24, skipping insertion in model container [2020-10-12 10:32:24,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:23" (2/3) ... [2020-10-12 10:32:24,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7476c56c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:32:24, skipping insertion in model container [2020-10-12 10:32:24,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:32:24" (3/3) ... [2020-10-12 10:32:24,293 INFO L109 eAbstractionObserver]: Analyzing ICFG byte_add_2-2.i [2020-10-12 10:32:24,305 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 10:32:24,312 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 10:32:24,326 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 10:32:24,361 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 10:32:24,362 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 10:32:24,362 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 10:32:24,362 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 10:32:24,362 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 10:32:24,362 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 10:32:24,362 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 10:32:24,363 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 10:32:24,390 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-10-12 10:32:24,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-12 10:32:24,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:24,398 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:32:24,399 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:24,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:24,404 INFO L82 PathProgramCache]: Analyzing trace with hash 397916932, now seen corresponding path program 1 times [2020-10-12 10:32:24,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:24,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046826292] [2020-10-12 10:32:24,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:24,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:24,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:24,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:24,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:24,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 10:32:24,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:32:24,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-12 10:32:24,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:24,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:24,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 10:32:24,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:24,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 10:32:24,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:24,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:24,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:24,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:24,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:32:24,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:24,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:24,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:24,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:24,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:24,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:24,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:32:24,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:32:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:24,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:24,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:24,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:24,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 10:32:24,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:32:24,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-12 10:32:24,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:24,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:24,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 10:32:24,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:24,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:32:24,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:32:24,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046826292] [2020-10-12 10:32:24,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:32:24,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-12 10:32:24,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925983877] [2020-10-12 10:32:24,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-12 10:32:24,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:24,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-12 10:32:24,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-12 10:32:24,933 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2020-10-12 10:32:24,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:24,977 INFO L93 Difference]: Finished difference Result 76 states and 112 transitions. [2020-10-12 10:32:24,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-12 10:32:24,980 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2020-10-12 10:32:24,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:24,999 INFO L225 Difference]: With dead ends: 76 [2020-10-12 10:32:24,999 INFO L226 Difference]: Without dead ends: 47 [2020-10-12 10:32:25,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-12 10:32:25,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-12 10:32:25,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-12 10:32:25,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-12 10:32:25,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 73 transitions. [2020-10-12 10:32:25,051 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 73 transitions. Word has length 21 [2020-10-12 10:32:25,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:25,051 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 73 transitions. [2020-10-12 10:32:25,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-12 10:32:25,052 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 73 transitions. [2020-10-12 10:32:25,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-12 10:32:25,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:25,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:32:25,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 10:32:25,054 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:25,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:25,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1531564698, now seen corresponding path program 1 times [2020-10-12 10:32:25,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:25,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404146072] [2020-10-12 10:32:25,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:25,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:25,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:25,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:25,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:25,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:25,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 10:32:25,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:32:25,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-12 10:32:25,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:25,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 10:32:25,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:32:25,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:25,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:32:25,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:25,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:25,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:25,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:32:25,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:25,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:25,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:25,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:25,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:25,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:25,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:32:25,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:32:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:25,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:25,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:25,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:25,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:25,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 10:32:25,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:32:25,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-12 10:32:25,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:25,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 10:32:25,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:32:25,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:25,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:32:25,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:32:25,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404146072] [2020-10-12 10:32:25,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:32:25,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 10:32:25,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742759063] [2020-10-12 10:32:25,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 10:32:25,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:25,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 10:32:25,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 10:32:25,722 INFO L87 Difference]: Start difference. First operand 47 states and 73 transitions. Second operand 4 states. [2020-10-12 10:32:26,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:26,025 INFO L93 Difference]: Finished difference Result 127 states and 213 transitions. [2020-10-12 10:32:26,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 10:32:26,026 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-12 10:32:26,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:26,032 INFO L225 Difference]: With dead ends: 127 [2020-10-12 10:32:26,032 INFO L226 Difference]: Without dead ends: 95 [2020-10-12 10:32:26,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:32:26,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-12 10:32:26,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 54. [2020-10-12 10:32:26,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-12 10:32:26,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 83 transitions. [2020-10-12 10:32:26,047 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 83 transitions. Word has length 21 [2020-10-12 10:32:26,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:26,048 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 83 transitions. [2020-10-12 10:32:26,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 10:32:26,048 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 83 transitions. [2020-10-12 10:32:26,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-12 10:32:26,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:26,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:32:26,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 10:32:26,050 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:26,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:26,051 INFO L82 PathProgramCache]: Analyzing trace with hash -2119311024, now seen corresponding path program 1 times [2020-10-12 10:32:26,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:26,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25025117] [2020-10-12 10:32:26,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:26,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:26,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 10:32:26,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:32:26,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-12 10:32:26,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:26,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:32:26,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:32:26,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:32:26,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:32:26,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:26,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:26,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:26,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:32:26,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:26,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:26,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:26,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:26,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:26,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:26,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:32:26,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:32:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:26,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:26,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:26,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 10:32:26,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:32:26,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-12 10:32:26,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:26,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:32:26,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:32:26,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:32:26,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:32:26,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:32:26,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25025117] [2020-10-12 10:32:26,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:32:26,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 10:32:26,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067631118] [2020-10-12 10:32:26,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 10:32:26,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:26,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 10:32:26,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:32:26,617 INFO L87 Difference]: Start difference. First operand 54 states and 83 transitions. Second operand 5 states. [2020-10-12 10:32:26,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:26,940 INFO L93 Difference]: Finished difference Result 183 states and 313 transitions. [2020-10-12 10:32:26,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 10:32:26,941 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-12 10:32:26,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:26,944 INFO L225 Difference]: With dead ends: 183 [2020-10-12 10:32:26,944 INFO L226 Difference]: Without dead ends: 151 [2020-10-12 10:32:26,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-10-12 10:32:26,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-12 10:32:26,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 101. [2020-10-12 10:32:26,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-12 10:32:26,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 163 transitions. [2020-10-12 10:32:26,963 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 163 transitions. Word has length 22 [2020-10-12 10:32:26,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:26,964 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 163 transitions. [2020-10-12 10:32:26,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 10:32:26,964 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 163 transitions. [2020-10-12 10:32:26,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-12 10:32:26,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:26,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:32:26,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 10:32:26,967 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:26,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:26,968 INFO L82 PathProgramCache]: Analyzing trace with hash -176408559, now seen corresponding path program 1 times [2020-10-12 10:32:26,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:26,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389227562] [2020-10-12 10:32:26,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:26,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:27,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:27,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 10:32:27,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:32:27,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-12 10:32:27,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:27,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:32:27,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:32:27,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 10:32:27,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:27,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:27,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:27,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:27,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:32:27,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:27,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:27,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:27,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:27,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:27,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:27,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:27,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:32:27,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:27,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:27,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 10:32:27,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:32:27,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-12 10:32:27,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:27,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:32:27,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:32:27,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 10:32:27,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:27,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:32:27,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389227562] [2020-10-12 10:32:27,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:32:27,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 10:32:27,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727321626] [2020-10-12 10:32:27,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 10:32:27,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:27,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 10:32:27,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 10:32:27,674 INFO L87 Difference]: Start difference. First operand 101 states and 163 transitions. Second operand 7 states. [2020-10-12 10:32:28,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:28,355 INFO L93 Difference]: Finished difference Result 256 states and 436 transitions. [2020-10-12 10:32:28,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 10:32:28,356 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-12 10:32:28,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:28,359 INFO L225 Difference]: With dead ends: 256 [2020-10-12 10:32:28,359 INFO L226 Difference]: Without dead ends: 224 [2020-10-12 10:32:28,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:32:28,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-12 10:32:28,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 137. [2020-10-12 10:32:28,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-12 10:32:28,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 221 transitions. [2020-10-12 10:32:28,375 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 221 transitions. Word has length 23 [2020-10-12 10:32:28,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:28,375 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 221 transitions. [2020-10-12 10:32:28,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 10:32:28,375 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 221 transitions. [2020-10-12 10:32:28,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 10:32:28,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:28,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:32:28,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 10:32:28,378 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:28,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:28,378 INFO L82 PathProgramCache]: Analyzing trace with hash -796916789, now seen corresponding path program 1 times [2020-10-12 10:32:28,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:28,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536969506] [2020-10-12 10:32:28,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:28,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:28,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:28,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:28,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:28,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:28,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:28,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:28,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:28,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:28,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:28,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:28,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:28,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:28,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:28,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:28,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:28,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:28,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:29,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:29,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:29,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:29,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:29,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:29,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:29,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:29,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:29,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:29,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:29,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:31,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 10:32:31,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 31 [2020-10-12 10:32:31,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2754 [2020-10-12 10:32:31,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:31,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:32:31,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:32:31,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 10:32:31,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:31,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:31,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:31,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:31,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:32:31,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:31,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:31,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:31,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:31,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:31,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:31,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:32:31,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:32:31,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:31,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:31,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:32,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:33,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:33,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 10:32:33,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 31 [2020-10-12 10:32:33,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2290 [2020-10-12 10:32:33,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:33,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:32:33,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:32:33,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 10:32:33,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:32:33,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:32:33,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536969506] [2020-10-12 10:32:33,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:32:33,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 10:32:33,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378045700] [2020-10-12 10:32:33,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 10:32:33,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:33,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 10:32:33,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 10:32:33,761 INFO L87 Difference]: Start difference. First operand 137 states and 221 transitions. Second operand 6 states. [2020-10-12 10:32:34,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:34,440 INFO L93 Difference]: Finished difference Result 266 states and 441 transitions. [2020-10-12 10:32:34,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 10:32:34,441 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-10-12 10:32:34,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:34,444 INFO L225 Difference]: With dead ends: 266 [2020-10-12 10:32:34,444 INFO L226 Difference]: Without dead ends: 218 [2020-10-12 10:32:34,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:32:34,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-12 10:32:34,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 162. [2020-10-12 10:32:34,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-12 10:32:34,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 264 transitions. [2020-10-12 10:32:34,472 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 264 transitions. Word has length 34 [2020-10-12 10:32:34,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:34,472 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 264 transitions. [2020-10-12 10:32:34,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 10:32:34,473 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 264 transitions. [2020-10-12 10:32:34,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-12 10:32:34,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:34,476 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:32:34,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 10:32:34,477 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:34,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:34,477 INFO L82 PathProgramCache]: Analyzing trace with hash 222473117, now seen corresponding path program 1 times [2020-10-12 10:32:34,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:34,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215749669] [2020-10-12 10:32:34,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:34,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:34,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:36,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:37,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:37,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 10:32:37,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 45 [2020-10-12 10:32:37,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3259 [2020-10-12 10:32:37,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:37,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:32:37,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:32:37,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 10:32:37,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:32:37,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:37,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:37,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:37,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:37,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:32:37,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:37,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:37,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:37,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:37,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:37,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:37,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:37,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:32:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:37,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:37,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:37,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:37,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:37,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:37,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:37,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:37,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:38,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:38,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:38,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:38,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:38,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:38,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:38,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:38,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:38,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:38,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:38,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:38,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:38,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:38,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:38,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:38,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:38,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:38,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:38,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:38,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:38,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:38,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:38,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:38,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:38,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:38,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:38,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:38,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:38,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:39,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:39,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:39,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:39,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:39,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:39,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:39,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:39,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:40,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:40,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 10:32:40,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 45 [2020-10-12 10:32:40,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2895 [2020-10-12 10:32:40,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:40,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:32:40,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:32:40,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 10:32:40,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:32:40,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:32:40,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215749669] [2020-10-12 10:32:40,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:32:40,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 10:32:40,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130342865] [2020-10-12 10:32:40,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 10:32:40,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:40,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 10:32:40,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 10:32:40,875 INFO L87 Difference]: Start difference. First operand 162 states and 264 transitions. Second operand 7 states. [2020-10-12 10:32:41,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:41,834 INFO L93 Difference]: Finished difference Result 311 states and 526 transitions. [2020-10-12 10:32:41,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 10:32:41,834 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-10-12 10:32:41,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:41,836 INFO L225 Difference]: With dead ends: 311 [2020-10-12 10:32:41,837 INFO L226 Difference]: Without dead ends: 274 [2020-10-12 10:32:41,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 10:32:41,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-10-12 10:32:41,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 210. [2020-10-12 10:32:41,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-10-12 10:32:41,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 348 transitions. [2020-10-12 10:32:41,861 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 348 transitions. Word has length 35 [2020-10-12 10:32:41,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:41,861 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 348 transitions. [2020-10-12 10:32:41,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 10:32:41,861 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 348 transitions. [2020-10-12 10:32:41,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 10:32:41,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:41,865 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:32:41,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 10:32:41,867 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:41,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:41,867 INFO L82 PathProgramCache]: Analyzing trace with hash -375519360, now seen corresponding path program 1 times [2020-10-12 10:32:41,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:41,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82047164] [2020-10-12 10:32:41,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:41,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:41,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:41,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:41,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:41,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:41,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:41,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:42,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:43,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:43,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:43,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:43,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:43,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:43,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:43,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:43,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:43,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:43,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:43,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:43,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:43,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:43,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:43,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:43,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:43,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:43,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:43,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:43,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:46,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:46,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 10:32:46,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 62 [2020-10-12 10:32:46,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 10:32:46,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:46,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:32:46,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:32:46,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 10:32:46,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:32:46,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:46,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:46,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:46,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:46,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:32:46,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:46,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:32:46,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:46,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:46,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:46,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:46,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:46,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:32:46,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:46,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:46,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:46,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:46,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:46,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:46,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:46,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:46,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:48,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:48,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:48,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:48,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:48,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:48,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:48,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:48,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:48,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:48,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:48,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:48,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:48,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:48,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:48,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:48,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:48,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:48,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:48,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:48,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:48,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:49,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:49,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:49,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:49,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:49,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:49,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:49,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:49,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:49,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:49,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:49,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:49,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:51,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:51,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 10:32:51,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 62 [2020-10-12 10:32:51,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 10:32:51,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:51,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:32:51,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:32:51,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 10:32:51,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:32:52,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:32:52,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82047164] [2020-10-12 10:32:52,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:32:52,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 10:32:52,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849253436] [2020-10-12 10:32:52,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 10:32:52,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:52,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 10:32:52,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 10:32:52,217 INFO L87 Difference]: Start difference. First operand 210 states and 348 transitions. Second operand 9 states. [2020-10-12 10:32:53,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:53,479 INFO L93 Difference]: Finished difference Result 355 states and 601 transitions. [2020-10-12 10:32:53,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 10:32:53,479 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2020-10-12 10:32:53,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:53,482 INFO L225 Difference]: With dead ends: 355 [2020-10-12 10:32:53,482 INFO L226 Difference]: Without dead ends: 323 [2020-10-12 10:32:53,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-12 10:32:53,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-10-12 10:32:53,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 213. [2020-10-12 10:32:53,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-10-12 10:32:53,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 351 transitions. [2020-10-12 10:32:53,493 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 351 transitions. Word has length 36 [2020-10-12 10:32:53,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:53,494 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 351 transitions. [2020-10-12 10:32:53,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 10:32:53,494 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 351 transitions. [2020-10-12 10:32:53,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 10:32:53,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:53,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:32:53,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 10:32:53,499 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:53,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:53,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1830946946, now seen corresponding path program 1 times [2020-10-12 10:32:53,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:53,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047989696] [2020-10-12 10:32:53,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:53,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:53,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:54,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:55,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:55,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 10:32:55,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-10-12 10:32:55,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2116 [2020-10-12 10:32:55,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:55,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 10:32:55,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:32:55,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 10:32:55,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:55,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:55,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:55,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:55,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:32:55,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:55,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:32:55,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:55,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:55,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:55,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:55,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:55,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:32:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:55,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:55,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:55,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:55,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:55,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:55,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:55,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:55,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:55,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:55,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:56,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:57,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:57,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 10:32:57,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-10-12 10:32:57,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1424 [2020-10-12 10:32:57,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:57,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 10:32:57,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:32:57,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 10:32:57,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:57,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:32:57,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047989696] [2020-10-12 10:32:57,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:32:57,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 10:32:57,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901736046] [2020-10-12 10:32:57,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 10:32:57,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:57,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 10:32:57,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 10:32:57,251 INFO L87 Difference]: Start difference. First operand 213 states and 351 transitions. Second operand 8 states. [2020-10-12 10:33:01,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:01,137 INFO L93 Difference]: Finished difference Result 461 states and 786 transitions. [2020-10-12 10:33:01,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 10:33:01,138 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-10-12 10:33:01,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:01,141 INFO L225 Difference]: With dead ends: 461 [2020-10-12 10:33:01,141 INFO L226 Difference]: Without dead ends: 424 [2020-10-12 10:33:01,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=46, Invalid=135, Unknown=1, NotChecked=0, Total=182 [2020-10-12 10:33:01,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-10-12 10:33:01,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 252. [2020-10-12 10:33:01,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-12 10:33:01,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 418 transitions. [2020-10-12 10:33:01,154 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 418 transitions. Word has length 36 [2020-10-12 10:33:01,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:01,154 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 418 transitions. [2020-10-12 10:33:01,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 10:33:01,155 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 418 transitions. [2020-10-12 10:33:01,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 10:33:01,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:01,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:33:01,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 10:33:01,156 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:01,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:01,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1093465256, now seen corresponding path program 1 times [2020-10-12 10:33:01,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:01,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230314602] [2020-10-12 10:33:01,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:01,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:01,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:01,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:02,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:02,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:05,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 10:33:05,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 43 [2020-10-12 10:33:05,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4539 [2020-10-12 10:33:05,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:05,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:33:05,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:33:05,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 10:33:05,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:33:05,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:05,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:05,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:05,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:05,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:05,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:05,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:05,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:05,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:05,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:05,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:33:05,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:33:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:05,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:05,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:07,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:07,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:07,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:07,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:07,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:07,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:07,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:07,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:08,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:08,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 10:33:08,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 42 [2020-10-12 10:33:08,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2462 [2020-10-12 10:33:08,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:08,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:33:08,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:33:08,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 10:33:08,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:08,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:33:08,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230314602] [2020-10-12 10:33:08,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:33:08,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 10:33:08,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192831898] [2020-10-12 10:33:08,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 10:33:08,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:08,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 10:33:08,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-12 10:33:08,280 INFO L87 Difference]: Start difference. First operand 252 states and 418 transitions. Second operand 7 states. [2020-10-12 10:33:09,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:09,397 INFO L93 Difference]: Finished difference Result 605 states and 1027 transitions. [2020-10-12 10:33:09,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 10:33:09,397 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-10-12 10:33:09,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:09,401 INFO L225 Difference]: With dead ends: 605 [2020-10-12 10:33:09,401 INFO L226 Difference]: Without dead ends: 504 [2020-10-12 10:33:09,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-12 10:33:09,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2020-10-12 10:33:09,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 375. [2020-10-12 10:33:09,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-10-12 10:33:09,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 636 transitions. [2020-10-12 10:33:09,418 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 636 transitions. Word has length 36 [2020-10-12 10:33:09,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:09,419 INFO L479 AbstractCegarLoop]: Abstraction has 375 states and 636 transitions. [2020-10-12 10:33:09,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 10:33:09,419 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 636 transitions. [2020-10-12 10:33:09,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-12 10:33:09,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:09,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:33:09,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 10:33:09,420 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:09,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:09,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1303833949, now seen corresponding path program 1 times [2020-10-12 10:33:09,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:09,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645857866] [2020-10-12 10:33:09,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:09,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:09,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:09,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:10,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:11,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:14,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 10:33:14,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 59 [2020-10-12 10:33:14,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 10:33:14,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:14,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 10:33:14,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:33:14,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 10:33:14,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:14,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:14,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:14,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:14,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:14,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:33:14,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:14,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:14,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:14,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:14,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:14,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:33:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:14,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:14,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:17,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 10:33:17,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 58 [2020-10-12 10:33:17,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2803 [2020-10-12 10:33:17,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:17,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 10:33:17,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:33:17,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 10:33:17,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:17,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:33:17,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645857866] [2020-10-12 10:33:17,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:33:17,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 10:33:17,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179582042] [2020-10-12 10:33:17,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 10:33:17,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:17,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 10:33:17,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:33:17,426 INFO L87 Difference]: Start difference. First operand 375 states and 636 transitions. Second operand 10 states. [2020-10-12 10:33:19,835 WARN L193 SmtUtils]: Spent 2.11 s on a formula simplification that was a NOOP. DAG size: 34 [2020-10-12 10:33:24,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:24,509 INFO L93 Difference]: Finished difference Result 704 states and 1216 transitions. [2020-10-12 10:33:24,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 10:33:24,509 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2020-10-12 10:33:24,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:24,514 INFO L225 Difference]: With dead ends: 704 [2020-10-12 10:33:24,514 INFO L226 Difference]: Without dead ends: 641 [2020-10-12 10:33:24,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2020-10-12 10:33:24,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2020-10-12 10:33:24,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 496. [2020-10-12 10:33:24,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2020-10-12 10:33:24,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 845 transitions. [2020-10-12 10:33:24,538 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 845 transitions. Word has length 37 [2020-10-12 10:33:24,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:24,538 INFO L479 AbstractCegarLoop]: Abstraction has 496 states and 845 transitions. [2020-10-12 10:33:24,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 10:33:24,538 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 845 transitions. [2020-10-12 10:33:24,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-12 10:33:24,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:24,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:33:24,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 10:33:24,540 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:24,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:24,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1077599131, now seen corresponding path program 1 times [2020-10-12 10:33:24,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:24,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436765382] [2020-10-12 10:33:24,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:24,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:24,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:24,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:26,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:26,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 10:33:26,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 28 [2020-10-12 10:33:26,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2397 [2020-10-12 10:33:26,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:26,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:33:26,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:33:26,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 10:33:26,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:26,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:26,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:26,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:26,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:26,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:26,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:33:26,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:26,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:26,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:26,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:26,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:26,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:33:26,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:26,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:26,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:26,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:26,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:26,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:26,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:27,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:27,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:27,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:27,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:27,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:27,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:27,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:27,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:27,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:27,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:27,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:27,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:27,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:27,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:27,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:27,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:27,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:27,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:27,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:27,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:27,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:28,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:28,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 10:33:28,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-10-12 10:33:28,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1392 [2020-10-12 10:33:28,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:28,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:33:28,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:33:28,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 10:33:28,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:30,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:33:30,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436765382] [2020-10-12 10:33:30,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:33:30,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 10:33:30,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479116742] [2020-10-12 10:33:30,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 10:33:30,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:30,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 10:33:30,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=52, Unknown=1, NotChecked=0, Total=72 [2020-10-12 10:33:30,656 INFO L87 Difference]: Start difference. First operand 496 states and 845 transitions. Second operand 9 states. [2020-10-12 10:33:32,919 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification that was a NOOP. DAG size: 36 [2020-10-12 10:33:51,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:51,709 INFO L93 Difference]: Finished difference Result 830 states and 1423 transitions. [2020-10-12 10:33:51,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 10:33:51,710 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-10-12 10:33:51,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:51,713 INFO L225 Difference]: With dead ends: 830 [2020-10-12 10:33:51,713 INFO L226 Difference]: Without dead ends: 726 [2020-10-12 10:33:51,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=63, Invalid=173, Unknown=4, NotChecked=0, Total=240 [2020-10-12 10:33:51,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2020-10-12 10:33:51,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 534. [2020-10-12 10:33:51,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 534 states. [2020-10-12 10:33:51,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 903 transitions. [2020-10-12 10:33:51,741 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 903 transitions. Word has length 37 [2020-10-12 10:33:51,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:51,741 INFO L479 AbstractCegarLoop]: Abstraction has 534 states and 903 transitions. [2020-10-12 10:33:51,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 10:33:51,742 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 903 transitions. [2020-10-12 10:33:51,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-12 10:33:51,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:51,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:33:51,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 10:33:51,743 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:51,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:51,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1250618190, now seen corresponding path program 1 times [2020-10-12 10:33:51,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:51,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539799685] [2020-10-12 10:33:51,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:51,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:51,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:51,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:51,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:51,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:51,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:51,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:51,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:51,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:51,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:51,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:51,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:51,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:51,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:51,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:51,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:51,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:52,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:52,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:52,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:52,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:52,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:52,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:52,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:52,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:52,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:52,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:52,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:52,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:52,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:52,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:52,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:52,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:52,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:52,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:52,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:54,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:54,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 10:33:54,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 35 [2020-10-12 10:33:54,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2333 [2020-10-12 10:33:54,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:54,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:33:54,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 10:33:54,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 10:33:54,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:54,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:54,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:54,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:54,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:54,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:54,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:54,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:33:54,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:54,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:54,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:54,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:54,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:54,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:33:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:54,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:54,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:54,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:54,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:54,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:54,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:54,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:54,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:54,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:54,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:54,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:54,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:54,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:54,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:54,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:54,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:54,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:54,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:54,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:54,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:54,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:54,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:54,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:54,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:54,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:54,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:54,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:54,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:54,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:54,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:54,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:54,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:55,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:55,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 10:33:55,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 32 [2020-10-12 10:33:55,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 932 [2020-10-12 10:33:55,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:55,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:33:55,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 10:33:55,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 10:33:55,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:55,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:33:55,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539799685] [2020-10-12 10:33:55,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:33:55,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 10:33:55,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508310543] [2020-10-12 10:33:55,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 10:33:55,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:55,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 10:33:55,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 10:33:55,096 INFO L87 Difference]: Start difference. First operand 534 states and 903 transitions. Second operand 7 states. [2020-10-12 10:33:56,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:56,033 INFO L93 Difference]: Finished difference Result 2023 states and 3453 transitions. [2020-10-12 10:33:56,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 10:33:56,034 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-10-12 10:33:56,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:56,045 INFO L225 Difference]: With dead ends: 2023 [2020-10-12 10:33:56,045 INFO L226 Difference]: Without dead ends: 1576 [2020-10-12 10:33:56,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 10:33:56,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2020-10-12 10:33:56,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 702. [2020-10-12 10:33:56,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-10-12 10:33:56,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1145 transitions. [2020-10-12 10:33:56,101 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1145 transitions. Word has length 37 [2020-10-12 10:33:56,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:56,102 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 1145 transitions. [2020-10-12 10:33:56,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 10:33:56,102 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1145 transitions. [2020-10-12 10:33:56,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-12 10:33:56,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:56,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:33:56,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 10:33:56,106 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:56,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:56,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1764485428, now seen corresponding path program 1 times [2020-10-12 10:33:56,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:56,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575017663] [2020-10-12 10:33:56,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:56,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:56,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:56,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:56,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:56,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:56,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:56,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:56,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:56,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:56,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:56,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:56,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:56,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:56,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:56,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:56,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:56,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:56,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:56,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:56,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:56,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:56,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:56,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:56,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:56,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:56,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:56,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:56,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:56,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:56,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:56,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:57,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:57,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 10:33:57,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 30 [2020-10-12 10:33:57,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1868 [2020-10-12 10:33:57,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:57,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:33:57,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 10:33:57,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 10:33:57,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:57,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:57,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:57,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:57,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:57,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:33:57,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:57,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:33:57,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:57,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:57,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:57,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:57,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:57,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:33:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:58,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:58,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:58,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 10:33:58,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-10-12 10:33:58,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 794 [2020-10-12 10:33:58,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:58,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:33:58,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 10:33:58,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 10:33:58,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:58,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:33:58,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575017663] [2020-10-12 10:33:58,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:33:58,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 10:33:58,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888056253] [2020-10-12 10:33:58,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 10:33:58,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:58,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 10:33:58,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 10:33:58,877 INFO L87 Difference]: Start difference. First operand 702 states and 1145 transitions. Second operand 7 states. [2020-10-12 10:33:59,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:59,804 INFO L93 Difference]: Finished difference Result 1789 states and 2939 transitions. [2020-10-12 10:33:59,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 10:33:59,806 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-10-12 10:33:59,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:59,818 INFO L225 Difference]: With dead ends: 1789 [2020-10-12 10:33:59,818 INFO L226 Difference]: Without dead ends: 1398 [2020-10-12 10:33:59,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:33:59,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2020-10-12 10:33:59,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 990. [2020-10-12 10:33:59,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 990 states. [2020-10-12 10:33:59,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1585 transitions. [2020-10-12 10:33:59,856 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1585 transitions. Word has length 37 [2020-10-12 10:33:59,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:59,856 INFO L479 AbstractCegarLoop]: Abstraction has 990 states and 1585 transitions. [2020-10-12 10:33:59,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 10:33:59,857 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1585 transitions. [2020-10-12 10:33:59,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-12 10:33:59,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:59,859 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:33:59,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 10:33:59,859 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:59,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:59,860 INFO L82 PathProgramCache]: Analyzing trace with hash 204981898, now seen corresponding path program 1 times [2020-10-12 10:33:59,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:59,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553668342] [2020-10-12 10:33:59,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:59,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:59,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:59,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:59,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:59,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:59,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:59,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:59,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:59,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:59,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:59,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:59,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:59,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:59,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:59,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:59,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:59,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:59,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:00,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:00,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:00,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:00,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:00,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:00,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:00,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:00,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:00,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:00,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:00,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:00,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:00,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:00,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:00,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:00,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:00,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:00,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:00,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:00,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:00,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:00,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:00,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:00,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:00,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:00,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:02,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 10:34:02,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 44 [2020-10-12 10:34:02,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2643 [2020-10-12 10:34:02,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:02,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:34:02,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 10:34:02,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 10:34:02,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:02,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:34:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:02,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:02,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:34:02,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:02,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:34:02,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:02,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:34:02,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:02,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:34:02,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:02,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:34:02,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:02,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:02,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:03,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:03,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:03,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:03,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:03,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:03,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:03,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:03,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:03,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:03,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:03,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:04,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:04,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 10:34:04,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 43 [2020-10-12 10:34:04,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1769 [2020-10-12 10:34:04,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:04,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:34:04,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:34:04,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 10:34:04,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:04,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:34:04,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553668342] [2020-10-12 10:34:04,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:34:04,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 10:34:04,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188734184] [2020-10-12 10:34:04,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 10:34:04,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:34:04,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 10:34:04,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-12 10:34:04,535 INFO L87 Difference]: Start difference. First operand 990 states and 1585 transitions. Second operand 7 states. [2020-10-12 10:34:12,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:34:12,546 INFO L93 Difference]: Finished difference Result 2528 states and 4074 transitions. [2020-10-12 10:34:12,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 10:34:12,547 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-10-12 10:34:12,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:34:12,555 INFO L225 Difference]: With dead ends: 2528 [2020-10-12 10:34:12,556 INFO L226 Difference]: Without dead ends: 1672 [2020-10-12 10:34:12,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-12 10:34:12,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2020-10-12 10:34:12,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 1275. [2020-10-12 10:34:12,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1275 states. [2020-10-12 10:34:12,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 1976 transitions. [2020-10-12 10:34:12,606 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 1976 transitions. Word has length 40 [2020-10-12 10:34:12,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:34:12,606 INFO L479 AbstractCegarLoop]: Abstraction has 1275 states and 1976 transitions. [2020-10-12 10:34:12,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 10:34:12,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 1976 transitions. [2020-10-12 10:34:12,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-12 10:34:12,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:34:12,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:34:12,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 10:34:12,609 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:34:12,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:34:12,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1745267973, now seen corresponding path program 1 times [2020-10-12 10:34:12,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:34:12,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255417565] [2020-10-12 10:34:12,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:34:12,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:12,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:12,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:12,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:12,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:12,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:12,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:12,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:12,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:12,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:12,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:12,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:12,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:12,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:12,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:12,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:12,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:12,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:13,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:13,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:13,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:13,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:13,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:13,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:13,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:13,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:14,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:14,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:14,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:14,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:14,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:14,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:14,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:14,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:14,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:14,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:15,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:15,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:15,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:15,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:15,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:17,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:17,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 10:34:17,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 40 [2020-10-12 10:34:17,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 10:34:17,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:17,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 10:34:17,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 10:34:17,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 10:34:17,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:17,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:34:17,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:17,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:17,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:17,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:34:17,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:17,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:34:17,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:17,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:34:17,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:17,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:34:17,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:17,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:34:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:17,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:17,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:17,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:17,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:17,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:17,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:17,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:17,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:17,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:17,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:17,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:17,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:17,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:17,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:17,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:17,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:18,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:18,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:18,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:18,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:18,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:19,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:19,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:19,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:19,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:19,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:19,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:19,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:19,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:19,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:19,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:20,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:20,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:20,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:20,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:20,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:20,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:22,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:22,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 10:34:22,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 37 [2020-10-12 10:34:22,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 10:34:22,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:22,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 10:34:22,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:34:22,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 10:34:22,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:22,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:34:22,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255417565] [2020-10-12 10:34:22,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:34:22,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 10:34:22,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767558726] [2020-10-12 10:34:22,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 10:34:22,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:34:22,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 10:34:22,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 10:34:22,740 INFO L87 Difference]: Start difference. First operand 1275 states and 1976 transitions. Second operand 8 states. [2020-10-12 10:34:24,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:34:24,734 INFO L93 Difference]: Finished difference Result 3407 states and 5196 transitions. [2020-10-12 10:34:24,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 10:34:24,735 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-10-12 10:34:24,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:34:24,742 INFO L225 Difference]: With dead ends: 3407 [2020-10-12 10:34:24,742 INFO L226 Difference]: Without dead ends: 2087 [2020-10-12 10:34:24,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2020-10-12 10:34:24,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2087 states. [2020-10-12 10:34:24,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2087 to 1541. [2020-10-12 10:34:24,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1541 states. [2020-10-12 10:34:24,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2167 transitions. [2020-10-12 10:34:24,802 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2167 transitions. Word has length 42 [2020-10-12 10:34:24,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:34:24,802 INFO L479 AbstractCegarLoop]: Abstraction has 1541 states and 2167 transitions. [2020-10-12 10:34:24,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 10:34:24,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2167 transitions. [2020-10-12 10:34:24,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-12 10:34:24,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:34:24,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:34:24,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 10:34:24,804 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:34:24,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:34:24,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1929255862, now seen corresponding path program 1 times [2020-10-12 10:34:24,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:34:24,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695679267] [2020-10-12 10:34:24,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:34:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:24,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:24,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:24,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:24,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:24,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:24,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:24,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:24,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:25,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:25,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:25,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:25,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:25,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:25,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:29,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:29,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 10:34:29,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 10:34:29,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 10:34:29,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:29,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:34:29,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:34:29,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 10:34:29,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:29,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:34:29,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:29,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:29,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:29,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:34:29,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:29,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:34:29,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:29,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:34:29,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:29,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:34:29,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:29,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:34:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:29,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:29,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:29,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:29,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:29,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:29,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:29,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:30,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:30,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:30,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:30,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:31,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:31,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 10:34:31,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 10:34:31,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1585 [2020-10-12 10:34:31,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:31,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:34:31,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:34:31,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 10:34:31,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:31,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:34:31,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695679267] [2020-10-12 10:34:31,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:34:31,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 10:34:31,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636892305] [2020-10-12 10:34:31,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 10:34:31,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:34:31,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 10:34:31,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 10:34:31,586 INFO L87 Difference]: Start difference. First operand 1541 states and 2167 transitions. Second operand 9 states. [2020-10-12 10:34:34,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:34:34,923 INFO L93 Difference]: Finished difference Result 4627 states and 6442 transitions. [2020-10-12 10:34:34,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 10:34:34,924 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2020-10-12 10:34:34,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:34:34,931 INFO L225 Difference]: With dead ends: 4627 [2020-10-12 10:34:34,932 INFO L226 Difference]: Without dead ends: 2952 [2020-10-12 10:34:34,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2020-10-12 10:34:34,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2020-10-12 10:34:35,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1649. [2020-10-12 10:34:35,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1649 states. [2020-10-12 10:34:35,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2349 transitions. [2020-10-12 10:34:35,008 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2349 transitions. Word has length 48 [2020-10-12 10:34:35,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:34:35,008 INFO L479 AbstractCegarLoop]: Abstraction has 1649 states and 2349 transitions. [2020-10-12 10:34:35,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 10:34:35,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2349 transitions. [2020-10-12 10:34:35,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 10:34:35,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:34:35,011 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:34:35,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 10:34:35,011 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:34:35,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:34:35,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1399827541, now seen corresponding path program 1 times [2020-10-12 10:34:35,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:34:35,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531652981] [2020-10-12 10:34:35,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:34:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:35,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:35,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:35,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:35,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:35,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:35,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:35,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:35,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:35,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:35,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:35,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:35,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:35,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:35,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:35,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:35,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:35,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:35,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:35,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:35,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:35,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:35,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:35,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:35,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:35,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:36,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:36,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:36,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:36,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:36,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:36,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:36,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:36,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:36,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:36,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:36,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:40,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:40,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 10:34:40,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 36 [2020-10-12 10:34:40,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 10:34:40,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:40,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 10:34:40,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:34:40,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 10:34:40,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:40,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:34:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:40,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:40,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:40,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:34:40,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:40,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:34:40,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:40,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:34:40,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:40,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:34:40,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:40,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:34:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:40,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:40,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:40,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:40,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:40,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:40,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:40,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:40,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:40,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:40,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:40,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:40,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:40,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:40,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:40,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:40,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:40,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:40,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:40,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:40,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:41,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:41,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:41,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:41,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:41,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:41,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:41,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:41,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:41,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:41,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:41,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:41,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:41,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:45,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:45,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 10:34:45,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 33 [2020-10-12 10:34:45,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 10:34:45,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:45,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 10:34:45,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:34:45,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 10:34:45,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:45,194 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:34:45,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531652981] [2020-10-12 10:34:45,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:34:45,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 10:34:45,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270654960] [2020-10-12 10:34:45,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 10:34:45,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:34:45,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 10:34:45,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:34:45,196 INFO L87 Difference]: Start difference. First operand 1649 states and 2349 transitions. Second operand 10 states. [2020-10-12 10:34:52,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:34:52,327 INFO L93 Difference]: Finished difference Result 3989 states and 5683 transitions. [2020-10-12 10:34:52,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 10:34:52,328 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2020-10-12 10:34:52,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:34:52,334 INFO L225 Difference]: With dead ends: 3989 [2020-10-12 10:34:52,334 INFO L226 Difference]: Without dead ends: 2395 [2020-10-12 10:34:52,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2020-10-12 10:34:52,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2395 states. [2020-10-12 10:34:52,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2395 to 1706. [2020-10-12 10:34:52,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1706 states. [2020-10-12 10:34:52,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1706 states to 1706 states and 2215 transitions. [2020-10-12 10:34:52,416 INFO L78 Accepts]: Start accepts. Automaton has 1706 states and 2215 transitions. Word has length 54 [2020-10-12 10:34:52,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:34:52,416 INFO L479 AbstractCegarLoop]: Abstraction has 1706 states and 2215 transitions. [2020-10-12 10:34:52,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 10:34:52,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1706 states and 2215 transitions. [2020-10-12 10:34:52,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-12 10:34:52,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:34:52,419 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:34:52,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 10:34:52,419 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:34:52,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:34:52,420 INFO L82 PathProgramCache]: Analyzing trace with hash -313662180, now seen corresponding path program 1 times [2020-10-12 10:34:52,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:34:52,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787329510] [2020-10-12 10:34:52,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:34:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:52,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:52,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:52,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:52,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:52,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 10:34:52,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:34:52,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-12 10:34:52,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:52,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:34:52,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 10:34:52,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 10:34:52,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:52,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:34:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:52,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:52,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:52,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:34:52,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:52,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:34:52,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:52,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:34:52,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:52,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:34:52,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:52,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:34:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:52,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:52,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:52,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:52,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:52,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 10:34:52,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:34:52,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-12 10:34:52,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:52,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:34:52,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:34:52,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 10:34:52,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:52,768 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-12 10:34:52,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787329510] [2020-10-12 10:34:52,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:34:52,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 10:34:52,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500726210] [2020-10-12 10:34:52,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 10:34:52,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:34:52,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 10:34:52,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:34:52,770 INFO L87 Difference]: Start difference. First operand 1706 states and 2215 transitions. Second operand 5 states. [2020-10-12 10:34:52,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:34:52,845 INFO L93 Difference]: Finished difference Result 1782 states and 2308 transitions. [2020-10-12 10:34:52,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 10:34:52,846 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-10-12 10:34:52,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:34:52,849 INFO L225 Difference]: With dead ends: 1782 [2020-10-12 10:34:52,849 INFO L226 Difference]: Without dead ends: 1385 [2020-10-12 10:34:52,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:34:52,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2020-10-12 10:34:52,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 1385. [2020-10-12 10:34:52,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1385 states. [2020-10-12 10:34:52,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1385 states to 1385 states and 1796 transitions. [2020-10-12 10:34:52,905 INFO L78 Accepts]: Start accepts. Automaton has 1385 states and 1796 transitions. Word has length 60 [2020-10-12 10:34:52,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:34:52,905 INFO L479 AbstractCegarLoop]: Abstraction has 1385 states and 1796 transitions. [2020-10-12 10:34:52,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 10:34:52,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1385 states and 1796 transitions. [2020-10-12 10:34:52,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-12 10:34:52,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:34:52,908 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:34:52,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 10:34:52,908 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:34:52,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:34:52,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1613330516, now seen corresponding path program 1 times [2020-10-12 10:34:52,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:34:52,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494944276] [2020-10-12 10:34:52,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:34:52,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:52,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:52,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:52,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:52,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 10:34:52,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:34:52,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-12 10:34:52,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:52,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:34:52,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 10:34:52,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 10:34:52,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:53,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:34:53,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:53,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:53,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:53,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:34:53,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:53,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:34:53,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:53,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:34:53,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:53,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:34:53,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:53,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 10:34:53,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:53,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:53,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:53,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:53,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 10:34:53,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:34:53,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-12 10:34:53,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:53,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:34:53,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:34:53,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 10:34:53,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:53,220 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-12 10:34:53,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494944276] [2020-10-12 10:34:53,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:34:53,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 10:34:53,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933554202] [2020-10-12 10:34:53,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 10:34:53,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:34:53,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 10:34:53,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:34:53,224 INFO L87 Difference]: Start difference. First operand 1385 states and 1796 transitions. Second operand 5 states. [2020-10-12 10:34:53,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:34:53,289 INFO L93 Difference]: Finished difference Result 1458 states and 1886 transitions. [2020-10-12 10:34:53,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 10:34:53,290 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-10-12 10:34:53,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:34:53,292 INFO L225 Difference]: With dead ends: 1458 [2020-10-12 10:34:53,293 INFO L226 Difference]: Without dead ends: 504 [2020-10-12 10:34:53,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:34:53,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2020-10-12 10:34:53,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 504. [2020-10-12 10:34:53,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 504 states. [2020-10-12 10:34:53,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 638 transitions. [2020-10-12 10:34:53,316 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 638 transitions. Word has length 67 [2020-10-12 10:34:53,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:34:53,316 INFO L479 AbstractCegarLoop]: Abstraction has 504 states and 638 transitions. [2020-10-12 10:34:53,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 10:34:53,316 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 638 transitions. [2020-10-12 10:34:53,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 10:34:53,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:34:53,318 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:34:53,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 10:34:53,318 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:34:53,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:34:53,319 INFO L82 PathProgramCache]: Analyzing trace with hash 764791237, now seen corresponding path program 1 times [2020-10-12 10:34:53,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:34:53,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623936906] [2020-10-12 10:34:53,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:34:53,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 10:34:53,338 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 10:34:53,338 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 10:34:53,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 10:34:53,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 10:34:53 BoogieIcfgContainer [2020-10-12 10:34:53,389 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 10:34:53,390 INFO L168 Benchmark]: Toolchain (without parser) took 150004.88 ms. Allocated memory was 138.4 MB in the beginning and 1.1 GB in the end (delta: 1.0 GB). Free memory was 101.4 MB in the beginning and 638.7 MB in the end (delta: -537.2 MB). Peak memory consumption was 471.0 MB. Max. memory is 7.1 GB. [2020-10-12 10:34:53,391 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-12 10:34:53,392 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.02 ms. Allocated memory is still 138.4 MB. Free memory was 101.2 MB in the beginning and 89.5 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2020-10-12 10:34:53,392 INFO L168 Benchmark]: Boogie Preprocessor took 161.62 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 89.5 MB in the beginning and 179.1 MB in the end (delta: -89.6 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-10-12 10:34:53,393 INFO L168 Benchmark]: RCFGBuilder took 437.17 ms. Allocated memory is still 201.9 MB. Free memory was 179.1 MB in the beginning and 156.4 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-10-12 10:34:53,394 INFO L168 Benchmark]: TraceAbstraction took 149102.32 ms. Allocated memory was 201.9 MB in the beginning and 1.1 GB in the end (delta: 944.8 MB). Free memory was 156.4 MB in the beginning and 638.7 MB in the end (delta: -482.3 MB). Peak memory consumption was 462.5 MB. Max. memory is 7.1 GB. [2020-10-12 10:34:53,396 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 299.02 ms. Allocated memory is still 138.4 MB. Free memory was 101.2 MB in the beginning and 89.5 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 161.62 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 89.5 MB in the beginning and 179.1 MB in the end (delta: -89.6 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 437.17 ms. Allocated memory is still 201.9 MB. Free memory was 179.1 MB in the beginning and 156.4 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 149102.32 ms. Allocated memory was 201.9 MB in the beginning and 1.1 GB in the end (delta: 944.8 MB). Free memory was 156.4 MB in the beginning and 638.7 MB in the end (delta: -482.3 MB). Peak memory consumption was 462.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 97. Possible FailurePath: [L105] unsigned int a, b, r; [L106] a = __VERIFIER_nondet_uint() [L108] b = 234770789 [L110] CALL, EXPR mp_add(a, b) [L23] unsigned char a0, a1, a2, a3; [L24] unsigned char b0, b1, b2, b3; [L25] unsigned char r0, r1, r2, r3; [L26] unsigned short carry; [L27] unsigned short partial_sum; [L28] unsigned int r; [L29] unsigned char i; [L30] unsigned char na, nb; [L31] a0 = a [L32] a1 = a >> 8 [L33] a2 = a >> 16U [L34] a3 = a >> 24U [L35] b0 = b [L36] b1 = b >> 8U [L37] b2 = b >> 16U [L38] b3 = b >> 24U [L39] na = (unsigned char)4 [L40] COND TRUE a3 == (unsigned char)0 [L41] na = na - 1 [L42] COND TRUE a2 == (unsigned char)0 [L43] na = na - 1 [L44] COND TRUE a1 == (unsigned char)0 [L45] na = na - 1 [L49] nb = (unsigned char)4 [L50] COND FALSE !(b3 == (unsigned char)0) [L59] carry = (unsigned short)0 [L60] i = (unsigned char)0 [L61] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L62] partial_sum = carry [L63] carry = (unsigned short)0 [L64] COND TRUE i < na [L65] COND TRUE i == (unsigned char)0 [L65] partial_sum = partial_sum + a0 [L66] COND FALSE !(i == (unsigned char)1) [L67] COND FALSE !(i == (unsigned char)2) [L68] COND FALSE !(i == (unsigned char)3) [L70] COND TRUE i < nb [L71] COND TRUE i == (unsigned char)0 [L71] partial_sum = partial_sum + b0 [L72] COND FALSE !(i == (unsigned char)1) [L73] COND FALSE !(i == (unsigned char)2) [L74] COND FALSE !(i == (unsigned char)3) [L76] COND FALSE !(partial_sum > ((unsigned char)255)) [L80] COND TRUE i == (unsigned char)0 [L80] r0 = (unsigned char)partial_sum [L81] COND FALSE !(i == (unsigned char)1) [L82] COND FALSE !(i == (unsigned char)2) [L83] COND FALSE !(i == (unsigned char)3) [L85] i = i + (unsigned char)1 [L61] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L62] partial_sum = carry [L63] carry = (unsigned short)0 [L64] COND FALSE !(i < na) [L70] COND TRUE i < nb [L71] COND FALSE !(i == (unsigned char)0) [L72] COND TRUE i == (unsigned char)1 [L72] partial_sum = partial_sum + b1 [L73] COND FALSE !(i == (unsigned char)2) [L74] COND FALSE !(i == (unsigned char)3) [L76] COND FALSE !(partial_sum > ((unsigned char)255)) [L80] COND FALSE !(i == (unsigned char)0) [L81] COND TRUE i == (unsigned char)1 [L81] r1 = (unsigned char)partial_sum [L82] COND FALSE !(i == (unsigned char)2) [L83] COND FALSE !(i == (unsigned char)3) [L85] i = i + (unsigned char)1 [L61] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L62] partial_sum = carry [L63] carry = (unsigned short)0 [L64] COND FALSE !(i < na) [L70] COND TRUE i < nb [L71] COND FALSE !(i == (unsigned char)0) [L72] COND FALSE !(i == (unsigned char)1) [L73] COND TRUE i == (unsigned char)2 [L73] partial_sum = partial_sum + b2 [L74] COND FALSE !(i == (unsigned char)3) [L76] COND FALSE !(partial_sum > ((unsigned char)255)) [L80] COND FALSE !(i == (unsigned char)0) [L81] COND FALSE !(i == (unsigned char)1) [L82] COND TRUE i == (unsigned char)2 [L82] r2 = (unsigned char)partial_sum [L83] COND FALSE !(i == (unsigned char)3) [L85] i = i + (unsigned char)1 [L61] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L62] partial_sum = carry [L63] carry = (unsigned short)0 [L64] COND FALSE !(i < na) [L70] COND TRUE i < nb [L71] COND FALSE !(i == (unsigned char)0) [L72] COND FALSE !(i == (unsigned char)1) [L73] COND FALSE !(i == (unsigned char)2) [L74] COND TRUE i == (unsigned char)3 [L74] partial_sum = partial_sum + b3 [L76] COND FALSE !(partial_sum > ((unsigned char)255)) [L80] COND FALSE !(i == (unsigned char)0) [L81] COND FALSE !(i == (unsigned char)1) [L82] COND FALSE !(i == (unsigned char)2) [L83] COND TRUE i == (unsigned char)3 [L83] r3 = (unsigned char)partial_sum [L85] i = i + (unsigned char)1 [L61] COND FALSE !((i < na) || (i < nb) || (carry != (unsigned short)0)) [L88] COND FALSE !(i < (unsigned char)4) [L97] r = r0 | (r1 << 8U) | (r2 << 16U) | ((unsigned int)r3 << 24U) [L99] return r; [L110] RET, EXPR mp_add(a, b) [L110] r = mp_add(a, b) [L112] CALL __VERIFIER_assert(r == a + b) [L5] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 149.0s, OverallIterations: 20, TraceHistogramMax: 4, AutomataDifference: 60.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2101 SDtfs, 7678 SDslu, 6863 SDs, 0 SdLazy, 10657 SolverSat, 1027 SolverUnsat, 11 SolverUnknown, 0 SolverNotchecked, 38.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 315 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 19.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1706occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 19 MinimizatonAttempts, 5263 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 87.6s InterpolantComputationTime, 802 NumberOfCodeBlocks, 802 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 704 ConstructedInterpolants, 0 QuantifiedInterpolants, 278193 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 9 PerfectInterpolantSequences, 48/67 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...