/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:40:18,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:40:18,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:40:18,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:40:18,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:40:18,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:40:18,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:40:18,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:40:18,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:40:18,241 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:40:18,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:40:18,244 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:40:18,244 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:40:18,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:40:18,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:40:18,248 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:40:18,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:40:18,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:40:18,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:40:18,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:40:18,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:40:18,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:40:18,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:40:18,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:40:18,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:40:18,266 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:40:18,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:40:18,268 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:40:18,268 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:40:18,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:40:18,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:40:18,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:40:18,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:40:18,274 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:40:18,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:40:18,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:40:18,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:40:18,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:40:18,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:40:18,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:40:18,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:40:18,288 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:40:18,349 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:40:18,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:40:18,350 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:40:18,350 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:40:18,351 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:40:18,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:40:18,351 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:40:18,351 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:40:18,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:40:18,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:40:18,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:40:18,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:40:18,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:40:18,354 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:40:18,354 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:40:18,354 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:40:18,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:40:18,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:40:18,355 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:40:18,355 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:40:18,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:40:18,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:40:18,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:40:18,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:40:18,356 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:40:18,357 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:40:18,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:40:18,357 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:40:18,358 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:40:18,358 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:40:18,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:40:18,844 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:40:18,850 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:40:18,852 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:40:18,853 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:40:18,854 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i [2020-09-25 13:40:18,951 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69d6cb997/c58bb1593b15409f9b3b1b250e8bf54a/FLAG780ab98bd [2020-09-25 13:40:19,479 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:40:19,480 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/sendmail-close-angle.i [2020-09-25 13:40:19,489 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69d6cb997/c58bb1593b15409f9b3b1b250e8bf54a/FLAG780ab98bd [2020-09-25 13:40:19,820 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69d6cb997/c58bb1593b15409f9b3b1b250e8bf54a [2020-09-25 13:40:19,833 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:40:19,838 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:40:19,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:40:19,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:40:19,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:40:19,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:40:19" (1/1) ... [2020-09-25 13:40:19,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68e64c0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:19, skipping insertion in model container [2020-09-25 13:40:19,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:40:19" (1/1) ... [2020-09-25 13:40:19,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:40:19,884 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:40:20,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:40:20,113 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:40:20,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:40:20,155 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:40:20,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:20 WrapperNode [2020-09-25 13:40:20,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:40:20,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:40:20,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:40:20,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:40:20,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:20" (1/1) ... [2020-09-25 13:40:20,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:20" (1/1) ... [2020-09-25 13:40:20,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:20" (1/1) ... [2020-09-25 13:40:20,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:20" (1/1) ... [2020-09-25 13:40:20,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:20" (1/1) ... [2020-09-25 13:40:20,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:20" (1/1) ... [2020-09-25 13:40:20,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:20" (1/1) ... [2020-09-25 13:40:20,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:40:20,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:40:20,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:40:20,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:40:20,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:40:20,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:40:20,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:40:20,354 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 13:40:20,354 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 13:40:20,354 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:40:20,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:40:20,355 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 13:40:20,355 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 13:40:20,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 13:40:20,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:40:20,355 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:40:20,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:40:20,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:40:20,675 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:40:20,675 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:40:20,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:40:20 BoogieIcfgContainer [2020-09-25 13:40:20,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:40:20,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:40:20,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:40:20,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:40:20,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:40:19" (1/3) ... [2020-09-25 13:40:20,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75aafe74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:40:20, skipping insertion in model container [2020-09-25 13:40:20,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:40:20" (2/3) ... [2020-09-25 13:40:20,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75aafe74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:40:20, skipping insertion in model container [2020-09-25 13:40:20,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:40:20" (3/3) ... [2020-09-25 13:40:20,691 INFO L109 eAbstractionObserver]: Analyzing ICFG sendmail-close-angle.i [2020-09-25 13:40:20,701 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:40:20,711 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:40:20,733 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:40:20,764 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:40:20,764 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:40:20,764 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:40:20,764 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:40:20,764 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:40:20,764 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:40:20,764 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:40:20,765 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:40:20,789 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-09-25 13:40:20,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 13:40:20,796 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:20,797 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] [2020-09-25 13:40:20,798 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:20,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:20,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1122321079, now seen corresponding path program 1 times [2020-09-25 13:40:20,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:20,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397644234] [2020-09-25 13:40:20,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:20,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:21,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:21,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:21,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:40:21,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:40:21,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-09-25 13:40:21,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:21,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:21,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:40:21,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 13:40:21,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:40:21,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:40:21,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:21,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:21,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:21,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:21,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:21,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:21,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:40:21,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:21,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:21,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:21,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:21,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:21,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:21,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:40:21,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397644234] [2020-09-25 13:40:21,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:40:21,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:40:21,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357647615] [2020-09-25 13:40:21,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:40:21,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:21,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:40:21,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:40:21,308 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 5 states. [2020-09-25 13:40:21,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:21,466 INFO L93 Difference]: Finished difference Result 108 states and 150 transitions. [2020-09-25 13:40:21,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:40:21,468 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-09-25 13:40:21,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:21,482 INFO L225 Difference]: With dead ends: 108 [2020-09-25 13:40:21,483 INFO L226 Difference]: Without dead ends: 64 [2020-09-25 13:40:21,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:40:21,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-25 13:40:21,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2020-09-25 13:40:21,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 13:40:21,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2020-09-25 13:40:21,550 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 24 [2020-09-25 13:40:21,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:21,550 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2020-09-25 13:40:21,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:40:21,551 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2020-09-25 13:40:21,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 13:40:21,554 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:21,554 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:21,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:40:21,555 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:21,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:21,555 INFO L82 PathProgramCache]: Analyzing trace with hash -873076999, now seen corresponding path program 1 times [2020-09-25 13:40:21,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:21,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894658574] [2020-09-25 13:40:21,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:21,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:21,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:21,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 13:40:21,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:21,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-09-25 13:40:21,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:21,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:21,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:40:21,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 13:40:21,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 13:40:21,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:21,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:21,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:21,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:21,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:21,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:21,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:21,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:40:21,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:21,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:21,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:21,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:21,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:21,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:21,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 13:40:21,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:21,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:21,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:21,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:21,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:21,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:40:21,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:21,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:21,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:21,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:21,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:21,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:21,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:40:21,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894658574] [2020-09-25 13:40:21,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:40:21,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 13:40:21,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299134163] [2020-09-25 13:40:21,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:40:21,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:21,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:40:21,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:40:21,881 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 6 states. [2020-09-25 13:40:22,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:22,105 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2020-09-25 13:40:22,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:40:22,106 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-09-25 13:40:22,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:22,108 INFO L225 Difference]: With dead ends: 70 [2020-09-25 13:40:22,108 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 13:40:22,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:40:22,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 13:40:22,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2020-09-25 13:40:22,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-25 13:40:22,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 76 transitions. [2020-09-25 13:40:22,124 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 76 transitions. Word has length 31 [2020-09-25 13:40:22,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:22,124 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 76 transitions. [2020-09-25 13:40:22,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:40:22,125 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2020-09-25 13:40:22,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 13:40:22,126 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:22,127 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:22,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:40:22,127 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:22,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:22,128 INFO L82 PathProgramCache]: Analyzing trace with hash 2057902492, now seen corresponding path program 1 times [2020-09-25 13:40:22,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:22,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548740312] [2020-09-25 13:40:22,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:22,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:22,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:22,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:22,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 13:40:22,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:40:22,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 457 [2020-09-25 13:40:22,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:22,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:22,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:40:22,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 13:40:22,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:40:22,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:22,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:22,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:22,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:22,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:22,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:22,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:22,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:40:22,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:22,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:22,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:22,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:22,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:22,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:40:22,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 13:40:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:22,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:22,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:22,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:22,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:22,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:40:22,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 13:40:22,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:22,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:22,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:22,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:22,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:22,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:22,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:40:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:22,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:22,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:22,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:22,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:22,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 13:40:22,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:22,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:22,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:22,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:22,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:22,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:22,762 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 13:40:22,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548740312] [2020-09-25 13:40:22,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:40:22,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:40:22,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050446905] [2020-09-25 13:40:22,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:40:22,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:22,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:40:22,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:40:22,768 INFO L87 Difference]: Start difference. First operand 64 states and 76 transitions. Second operand 7 states. [2020-09-25 13:40:22,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:22,942 INFO L93 Difference]: Finished difference Result 77 states and 89 transitions. [2020-09-25 13:40:22,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:40:22,945 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-09-25 13:40:22,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:22,948 INFO L225 Difference]: With dead ends: 77 [2020-09-25 13:40:22,949 INFO L226 Difference]: Without dead ends: 75 [2020-09-25 13:40:22,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:40:22,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-25 13:40:22,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2020-09-25 13:40:22,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-25 13:40:22,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2020-09-25 13:40:22,981 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 39 [2020-09-25 13:40:22,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:22,982 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2020-09-25 13:40:22,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:40:22,982 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2020-09-25 13:40:22,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 13:40:22,985 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:22,987 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:22,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:40:22,988 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:22,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:22,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1847294180, now seen corresponding path program 1 times [2020-09-25 13:40:22,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:22,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592646745] [2020-09-25 13:40:22,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:23,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:23,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:23,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 13:40:23,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:23,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-09-25 13:40:23,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:23,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:23,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:40:23,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 13:40:23,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 13:40:23,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:23,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:23,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:23,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:23,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:23,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:23,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:23,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:40:23,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:23,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:23,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:23,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:23,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:23,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:23,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 13:40:23,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:23,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:23,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:23,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:23,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:23,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:40:23,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:23,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:23,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:23,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:23,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:23,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:23,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:40:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:23,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:23,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:23,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:23,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:23,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:40:23,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:23,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:23,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:23,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:23,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:23,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:23,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 13:40:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:23,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:23,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:23,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:23,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:23,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 13:40:23,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:23,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:23,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:23,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:23,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:23,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:23,369 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 13:40:23,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592646745] [2020-09-25 13:40:23,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:40:23,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 13:40:23,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335685857] [2020-09-25 13:40:23,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:40:23,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:23,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:40:23,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:40:23,374 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand 8 states. [2020-09-25 13:40:23,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:23,638 INFO L93 Difference]: Finished difference Result 81 states and 92 transitions. [2020-09-25 13:40:23,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 13:40:23,639 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-09-25 13:40:23,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:23,640 INFO L225 Difference]: With dead ends: 81 [2020-09-25 13:40:23,641 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 13:40:23,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:40:23,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 13:40:23,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2020-09-25 13:40:23,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 13:40:23,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2020-09-25 13:40:23,661 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 44 [2020-09-25 13:40:23,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:23,662 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2020-09-25 13:40:23,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:40:23,662 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2020-09-25 13:40:23,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 13:40:23,664 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:23,667 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:23,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:40:23,668 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:23,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:23,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1076854334, now seen corresponding path program 1 times [2020-09-25 13:40:23,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:23,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24062571] [2020-09-25 13:40:23,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:23,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:23,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:23,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 13:40:23,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:23,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-25 13:40:23,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:23,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:23,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:40:23,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 13:40:23,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 13:40:23,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:40:23,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:23,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:23,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:23,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:23,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:23,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:23,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:40:23,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:23,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:23,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:23,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:23,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:23,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:23,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 13:40:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:23,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:23,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:23,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:23,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:23,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:23,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:23,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:23,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:23,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:23,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:23,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:23,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:40:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:23,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:23,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:23,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:23,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:23,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:40:23,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:23,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:23,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:23,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:23,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:23,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:23,934 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 13:40:23,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24062571] [2020-09-25 13:40:23,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:40:23,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 13:40:23,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855821992] [2020-09-25 13:40:23,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:40:23,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:23,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:40:23,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:40:23,938 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand 6 states. [2020-09-25 13:40:24,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:24,007 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2020-09-25 13:40:24,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:40:24,008 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-09-25 13:40:24,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:24,012 INFO L225 Difference]: With dead ends: 67 [2020-09-25 13:40:24,012 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 13:40:24,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:40:24,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 13:40:24,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-09-25 13:40:24,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 13:40:24,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2020-09-25 13:40:24,021 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 43 [2020-09-25 13:40:24,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:24,022 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2020-09-25 13:40:24,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:40:24,022 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2020-09-25 13:40:24,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 13:40:24,023 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:24,023 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:24,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:40:24,024 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:24,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:24,024 INFO L82 PathProgramCache]: Analyzing trace with hash 146364602, now seen corresponding path program 1 times [2020-09-25 13:40:24,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:24,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079653805] [2020-09-25 13:40:24,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:24,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:24,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:24,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:24,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:24,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 13:40:24,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:40:24,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 644 [2020-09-25 13:40:24,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:24,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:24,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:40:24,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 13:40:24,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 13:40:24,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:24,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:24,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:24,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:24,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:24,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:24,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:40:24,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:24,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:24,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:24,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:24,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:24,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:24,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 13:40:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:24,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:24,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:24,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:24,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:24,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:40:24,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:24,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:24,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:24,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:24,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:24,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:24,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:40:24,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:24,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:24,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:24,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:24,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:24,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:40:24,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:24,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:24,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:24,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:24,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:24,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:24,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 13:40:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:24,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:24,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:24,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:24,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:24,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:40:24,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:24,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:24,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:24,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:24,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:24,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 13:40:24,850 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 13:40:24,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079653805] [2020-09-25 13:40:24,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:40:24,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 13:40:24,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815666334] [2020-09-25 13:40:24,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:40:24,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:24,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:40:24,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:40:24,856 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand 9 states. [2020-09-25 13:40:25,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:25,153 INFO L93 Difference]: Finished difference Result 98 states and 113 transitions. [2020-09-25 13:40:25,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:40:25,155 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2020-09-25 13:40:25,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:25,158 INFO L225 Difference]: With dead ends: 98 [2020-09-25 13:40:25,159 INFO L226 Difference]: Without dead ends: 96 [2020-09-25 13:40:25,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:40:25,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-25 13:40:25,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 77. [2020-09-25 13:40:25,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-25 13:40:25,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2020-09-25 13:40:25,183 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 48 [2020-09-25 13:40:25,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:25,183 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2020-09-25 13:40:25,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:40:25,184 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2020-09-25 13:40:25,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 13:40:25,188 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:25,188 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 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] [2020-09-25 13:40:25,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:40:25,189 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:25,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:25,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1943579560, now seen corresponding path program 1 times [2020-09-25 13:40:25,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:25,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872833599] [2020-09-25 13:40:25,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:25,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:25,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:25,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:25,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 13:40:25,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:40:25,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 415 [2020-09-25 13:40:25,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:25,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:25,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:40:25,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 13:40:25,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 13:40:25,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:25,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:25,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:25,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:25,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:25,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:25,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:25,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:40:25,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:25,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:25,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:25,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:25,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:25,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:25,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 13:40:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:25,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:25,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:25,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:25,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:25,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:40:25,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:40:25,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:25,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:25,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:25,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:25,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:25,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:25,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:40:25,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:25,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:25,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:25,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:25,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:25,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:40:25,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:25,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:25,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:25,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:25,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:25,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:25,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 13:40:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:25,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:25,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:25,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:25,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:25,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:25,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:25,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:25,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:25,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:25,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:25,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:25,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 13:40:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:25,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:25,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:25,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:25,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:25,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:40:25,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:25,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:25,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:25,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:25,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:25,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:25,772 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 13:40:25,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872833599] [2020-09-25 13:40:25,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:40:25,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:40:25,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043920679] [2020-09-25 13:40:25,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:40:25,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:25,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:40:25,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:40:25,777 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand 7 states. [2020-09-25 13:40:25,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:25,903 INFO L93 Difference]: Finished difference Result 83 states and 90 transitions. [2020-09-25 13:40:25,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:40:25,904 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-09-25 13:40:25,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:25,907 INFO L225 Difference]: With dead ends: 83 [2020-09-25 13:40:25,907 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 13:40:25,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:40:25,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 13:40:25,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-09-25 13:40:25,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 13:40:25,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 88 transitions. [2020-09-25 13:40:25,928 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 88 transitions. Word has length 56 [2020-09-25 13:40:25,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:25,929 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 88 transitions. [2020-09-25 13:40:25,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:40:25,929 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions. [2020-09-25 13:40:25,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 13:40:25,934 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:25,934 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 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] [2020-09-25 13:40:25,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:40:25,935 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:25,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:25,938 INFO L82 PathProgramCache]: Analyzing trace with hash 903884048, now seen corresponding path program 1 times [2020-09-25 13:40:25,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:25,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907472471] [2020-09-25 13:40:25,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:25,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:26,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:26,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 13:40:26,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:26,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-09-25 13:40:26,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:26,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:26,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:40:26,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 13:40:26,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 13:40:26,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:26,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:26,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:26,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:26,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:26,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:26,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:40:26,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:26,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:26,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:26,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:26,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:26,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:26,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 13:40:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:26,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:26,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:26,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:26,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:26,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:40:26,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:26,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:26,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:26,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:26,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:26,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:26,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:40:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:26,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:26,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:26,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:26,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:26,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:40:26,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:26,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:26,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:26,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:26,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:26,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:26,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 13:40:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:26,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:26,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:26,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:26,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:26,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:26,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:26,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:26,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:26,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:26,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:26,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:26,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 13:40:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:26,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:26,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:26,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:26,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:26,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:40:26,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:26,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:26,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:26,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:26,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:26,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:26,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 13:40:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:26,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:26,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:26,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:26,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:26,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:26,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:26,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:26,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:26,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:26,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:26,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:26,303 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 13:40:26,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907472471] [2020-09-25 13:40:26,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:40:26,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:40:26,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966398171] [2020-09-25 13:40:26,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:40:26,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:26,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:40:26,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:40:26,305 INFO L87 Difference]: Start difference. First operand 81 states and 88 transitions. Second operand 8 states. [2020-09-25 13:40:26,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:26,497 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2020-09-25 13:40:26,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 13:40:26,498 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2020-09-25 13:40:26,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:26,499 INFO L225 Difference]: With dead ends: 100 [2020-09-25 13:40:26,500 INFO L226 Difference]: Without dead ends: 98 [2020-09-25 13:40:26,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:40:26,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-25 13:40:26,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2020-09-25 13:40:26,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-25 13:40:26,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 106 transitions. [2020-09-25 13:40:26,511 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 106 transitions. Word has length 61 [2020-09-25 13:40:26,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:26,511 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 106 transitions. [2020-09-25 13:40:26,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:40:26,512 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 106 transitions. [2020-09-25 13:40:26,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 13:40:26,513 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:26,513 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:26,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 13:40:26,514 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:26,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:26,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1662212275, now seen corresponding path program 1 times [2020-09-25 13:40:26,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:26,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648763092] [2020-09-25 13:40:26,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:26,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:26,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:26,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:28,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:28,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 13:40:28,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:40:28,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1605 [2020-09-25 13:40:28,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:28,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:28,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:40:28,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 13:40:28,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 13:40:28,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:28,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:28,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:28,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:28,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:28,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:28,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:28,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:40:28,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:28,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:28,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:28,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:28,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:28,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:28,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 13:40:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:28,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:28,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:28,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:28,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:28,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:40:28,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:28,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:28,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:28,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:28,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:28,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:28,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:28,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:40:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:28,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:28,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:28,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:28,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:28,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:40:28,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:28,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:28,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:28,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:28,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:28,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:28,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 13:40:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:28,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:28,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:28,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:28,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:28,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:28,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:28,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:28,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:28,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:28,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:28,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:28,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 13:40:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:28,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:28,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:28,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:28,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:28,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:28,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:28,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:28,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:28,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:28,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:28,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:28,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 13:40:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:28,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:28,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:28,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:28,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:28,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:28,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:28,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:28,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:28,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:28,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:28,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:28,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 13:40:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:28,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:28,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:28,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:28,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:28,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:28,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:28,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:28,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:28,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:28,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:28,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:28,305 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-25 13:40:28,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648763092] [2020-09-25 13:40:28,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:40:28,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 13:40:28,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182450671] [2020-09-25 13:40:28,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:40:28,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:28,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:40:28,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:40:28,307 INFO L87 Difference]: Start difference. First operand 94 states and 106 transitions. Second operand 9 states. [2020-09-25 13:40:28,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:28,458 INFO L93 Difference]: Finished difference Result 100 states and 111 transitions. [2020-09-25 13:40:28,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:40:28,459 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-25 13:40:28,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:28,460 INFO L225 Difference]: With dead ends: 100 [2020-09-25 13:40:28,460 INFO L226 Difference]: Without dead ends: 98 [2020-09-25 13:40:28,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:40:28,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-25 13:40:28,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-09-25 13:40:28,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-25 13:40:28,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2020-09-25 13:40:28,471 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 69 [2020-09-25 13:40:28,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:28,471 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2020-09-25 13:40:28,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:40:28,471 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2020-09-25 13:40:28,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 13:40:28,472 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:28,473 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:28,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 13:40:28,473 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:28,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:28,474 INFO L82 PathProgramCache]: Analyzing trace with hash 71900773, now seen corresponding path program 1 times [2020-09-25 13:40:28,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:28,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698291878] [2020-09-25 13:40:28,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:28,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:28,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:28,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:29,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:29,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-25 13:40:29,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:40:29,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1404 [2020-09-25 13:40:29,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:29,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:29,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:40:29,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 13:40:29,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 13:40:29,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:30,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:30,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:30,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:30,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:30,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:30,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:30,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:40:30,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:30,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:30,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:30,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:30,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:30,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:30,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 13:40:30,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:30,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:30,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:30,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:30,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:30,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:40:30,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:30,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:30,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:30,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:30,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:30,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:30,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:40:30,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:30,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:30,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:30,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:30,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:30,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:40:30,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:30,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:30,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:30,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:30,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:30,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:30,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 13:40:30,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:30,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:30,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:30,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:30,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:30,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:40:30,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:30,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:30,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:30,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:30,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:30,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:30,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 13:40:30,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:30,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:30,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:30,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:30,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:30,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:40:30,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:30,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:30,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:30,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:30,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:30,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:30,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 13:40:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:30,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:30,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:30,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:30,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:30,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:40:30,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:30,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:30,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:30,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:30,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:30,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:30,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 13:40:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:30,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:30,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:30,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:30,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:30,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:40:30,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:30,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:30,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:30,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:30,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:30,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:30,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 13:40:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:30,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:30,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:30,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:30,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:30,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:40:30,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:30,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:30,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:30,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:30,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:30,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:30,227 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-09-25 13:40:30,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698291878] [2020-09-25 13:40:30,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:40:30,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 13:40:30,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186817228] [2020-09-25 13:40:30,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 13:40:30,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:30,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 13:40:30,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:40:30,230 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand 12 states. [2020-09-25 13:40:30,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:30,529 INFO L93 Difference]: Finished difference Result 111 states and 122 transitions. [2020-09-25 13:40:30,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:40:30,530 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 74 [2020-09-25 13:40:30,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:30,531 INFO L225 Difference]: With dead ends: 111 [2020-09-25 13:40:30,531 INFO L226 Difference]: Without dead ends: 97 [2020-09-25 13:40:30,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:40:30,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-09-25 13:40:30,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2020-09-25 13:40:30,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-25 13:40:30,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 102 transitions. [2020-09-25 13:40:30,540 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 102 transitions. Word has length 74 [2020-09-25 13:40:30,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:30,540 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 102 transitions. [2020-09-25 13:40:30,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 13:40:30,540 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 102 transitions. [2020-09-25 13:40:30,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 13:40:30,541 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:30,541 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:30,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 13:40:30,542 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:30,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:30,542 INFO L82 PathProgramCache]: Analyzing trace with hash -50388093, now seen corresponding path program 1 times [2020-09-25 13:40:30,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:30,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117903897] [2020-09-25 13:40:30,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:30,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:30,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:30,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:30,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:30,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:32,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:32,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 13:40:32,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:40:32,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1733 [2020-09-25 13:40:32,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:32,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:32,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:40:32,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 13:40:32,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 13:40:32,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:32,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:32,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:32,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:32,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:32,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:32,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:40:32,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:32,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:32,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:32,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:32,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:32,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:32,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 13:40:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:32,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:32,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:32,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:32,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:32,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:32,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:32,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:32,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:32,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:32,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:32,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:32,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:40:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:32,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:32,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:32,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:32,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:32,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:32,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:32,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:32,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:32,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:32,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:32,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:32,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 13:40:32,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:32,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:32,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:32,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:32,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:32,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:32,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:32,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:32,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:32,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:32,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:32,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:32,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 13:40:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:32,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:32,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:32,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:32,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:32,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:40:32,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:32,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:32,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:32,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:32,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:32,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:32,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 13:40:32,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:32,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:32,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:32,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:32,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:32,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:32,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:32,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:32,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:32,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:32,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:32,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:32,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 13:40:32,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:32,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:32,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:32,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:32,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:32,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:32,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:32,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:32,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:32,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:32,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:32,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:32,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 13:40:32,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:32,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:32,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:32,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:32,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:32,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:32,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:32,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:32,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:32,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:32,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:32,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:32,528 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-09-25 13:40:32,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117903897] [2020-09-25 13:40:32,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:40:32,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:40:32,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413654947] [2020-09-25 13:40:32,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:40:32,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:32,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:40:32,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:40:32,531 INFO L87 Difference]: Start difference. First operand 95 states and 102 transitions. Second operand 11 states. [2020-09-25 13:40:32,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:32,861 INFO L93 Difference]: Finished difference Result 128 states and 143 transitions. [2020-09-25 13:40:32,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 13:40:32,862 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 78 [2020-09-25 13:40:32,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:32,863 INFO L225 Difference]: With dead ends: 128 [2020-09-25 13:40:32,864 INFO L226 Difference]: Without dead ends: 126 [2020-09-25 13:40:32,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2020-09-25 13:40:32,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-09-25 13:40:32,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 107. [2020-09-25 13:40:32,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-25 13:40:32,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 115 transitions. [2020-09-25 13:40:32,875 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 115 transitions. Word has length 78 [2020-09-25 13:40:32,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:32,876 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 115 transitions. [2020-09-25 13:40:32,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:40:32,876 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 115 transitions. [2020-09-25 13:40:32,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-25 13:40:32,877 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:32,877 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:32,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 13:40:32,878 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:32,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:32,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1911943399, now seen corresponding path program 2 times [2020-09-25 13:40:32,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:32,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966487029] [2020-09-25 13:40:32,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:32,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:32,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:33,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:34,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:34,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 13:40:34,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:40:34,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1476 [2020-09-25 13:40:34,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:34,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:34,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:40:34,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 13:40:34,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 13:40:34,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:34,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:34,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:34,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:34,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:34,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:34,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:40:34,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:34,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:34,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:34,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:34,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:34,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:34,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 13:40:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:34,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:34,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:34,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:34,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:34,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:34,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:34,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:34,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:34,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:34,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:34,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:34,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:40:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:34,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:34,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:34,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:34,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:34,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:40:34,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:34,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:34,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:34,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:34,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:34,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:34,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 13:40:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:34,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:34,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:34,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:34,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:34,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:34,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:34,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:34,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:34,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:34,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:34,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:34,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 13:40:34,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:34,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:34,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:34,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:34,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:34,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:40:34,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:34,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:34,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:34,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:34,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:34,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:34,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 13:40:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:34,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:34,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:34,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:34,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:34,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:40:34,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:34,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:34,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:34,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:34,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:34,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:34,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 13:40:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:34,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:34,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:34,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:34,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:34,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:34,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:34,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:34,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:34,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:34,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:34,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:34,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 13:40:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:34,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:34,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:34,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:34,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:34,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:40:34,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:34,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:34,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:34,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:34,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:34,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:34,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 13:40:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:34,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:34,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:34,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:34,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:34,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:40:34,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:34,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:34,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:34,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:34,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:34,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:34,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-25 13:40:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:34,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:34,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:34,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:34,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:34,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:40:34,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:34,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:34,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:34,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:34,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:34,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:34,773 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-09-25 13:40:34,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966487029] [2020-09-25 13:40:34,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:40:34,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 13:40:34,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231204098] [2020-09-25 13:40:34,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 13:40:34,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:34,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 13:40:34,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:40:34,776 INFO L87 Difference]: Start difference. First operand 107 states and 115 transitions. Second operand 12 states. [2020-09-25 13:40:35,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:35,113 INFO L93 Difference]: Finished difference Result 126 states and 139 transitions. [2020-09-25 13:40:35,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 13:40:35,113 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 91 [2020-09-25 13:40:35,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:35,115 INFO L225 Difference]: With dead ends: 126 [2020-09-25 13:40:35,115 INFO L226 Difference]: Without dead ends: 124 [2020-09-25 13:40:35,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2020-09-25 13:40:35,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-09-25 13:40:35,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 120. [2020-09-25 13:40:35,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-25 13:40:35,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 133 transitions. [2020-09-25 13:40:35,134 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 133 transitions. Word has length 91 [2020-09-25 13:40:35,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:35,134 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 133 transitions. [2020-09-25 13:40:35,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 13:40:35,134 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 133 transitions. [2020-09-25 13:40:35,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-25 13:40:35,136 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:35,136 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:35,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 13:40:35,136 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:35,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:35,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1949077486, now seen corresponding path program 2 times [2020-09-25 13:40:35,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:35,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116066662] [2020-09-25 13:40:35,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:35,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:35,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:35,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:35,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:40,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:40,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 13:40:40,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:40:40,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 13:40:40,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:40,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:40,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 13:40:40,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 13:40:40,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 13:40:40,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:40,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:40,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:40,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:40,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:40,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:40,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:40,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:40:40,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:40,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:40,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:40,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:40,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:40,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:40,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 13:40:40,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:40,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:40,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:40,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:40,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:40,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:40,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:40,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:40,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:40,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:40,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:40,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:40,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:40:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:40,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:40,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:40,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:40,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:40,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:40,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:40,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:40,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:40,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:40,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:40,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:40,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 13:40:40,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:40,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:40,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:40,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:40,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:40,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:40,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:40,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:40,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:40,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:40,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:40,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:40,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 13:40:40,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:40,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:40,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:40,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:40,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:40,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:40,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:40,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:40,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:40,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:40,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:40,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:40,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 13:40:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:40,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:40,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:40,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:40,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:40,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:40,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:40,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:40,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:40,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:40,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:40,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:40,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 13:40:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:40,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:40,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:40,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:40,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:40,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:40,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:40,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:40,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:40,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:40,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:40,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:40,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 13:40:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:40,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:40,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:40,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:40,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:40,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:40,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:40,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:40,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:40,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:40,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:40,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:40,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 13:40:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:40,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:40,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:40,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:40,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:40,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:40,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:40,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:40,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:40,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:40,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:40,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:40,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-25 13:40:40,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:40,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:40,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:40,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:40,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:40,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:40,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:40,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:40,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:40,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:40,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:40,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:40,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 13:40:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:40,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:40,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:40,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:40,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:40,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:40,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:40,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:40,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:40:40,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:40,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:40:40,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:40,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-09-25 13:40:40,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:40,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:40,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:40,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:40,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:40,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:40,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:40,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:40,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:40,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:40,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:40,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:40,478 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 48 proven. 18 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2020-09-25 13:40:40,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116066662] [2020-09-25 13:40:40,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:40:40,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 13:40:40,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388507065] [2020-09-25 13:40:40,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 13:40:40,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:40,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 13:40:40,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:40:40,480 INFO L87 Difference]: Start difference. First operand 120 states and 133 transitions. Second operand 12 states. [2020-09-25 13:40:40,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:40,882 INFO L93 Difference]: Finished difference Result 130 states and 147 transitions. [2020-09-25 13:40:40,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 13:40:40,885 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 104 [2020-09-25 13:40:40,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:40,886 INFO L225 Difference]: With dead ends: 130 [2020-09-25 13:40:40,887 INFO L226 Difference]: Without dead ends: 108 [2020-09-25 13:40:40,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2020-09-25 13:40:40,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-09-25 13:40:40,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-09-25 13:40:40,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-25 13:40:40,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 115 transitions. [2020-09-25 13:40:40,898 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 115 transitions. Word has length 104 [2020-09-25 13:40:40,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:40,898 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 115 transitions. [2020-09-25 13:40:40,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 13:40:40,898 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 115 transitions. [2020-09-25 13:40:40,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-25 13:40:40,899 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:40,900 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:40,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 13:40:40,900 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:40,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:40,901 INFO L82 PathProgramCache]: Analyzing trace with hash 55355532, now seen corresponding path program 2 times [2020-09-25 13:40:40,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:40,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106752920] [2020-09-25 13:40:40,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:40,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:41,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:41,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:41,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:43,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:45,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:45,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 13:40:45,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:40:45,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 13:40:45,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:45,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:45,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:40:45,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 13:40:45,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 13:40:45,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:46,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:46,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:46,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:46,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:46,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:46,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:40:46,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:46,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:46,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:46,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:46,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:46,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:46,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 13:40:46,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:46,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:46,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:46,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:46,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:46,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:46,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:46,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:46,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:46,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:46,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:46,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:46,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:40:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:46,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:46,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:46,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:46,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:46,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:46,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:46,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:46,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:46,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:46,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:46,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:46,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 13:40:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:46,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:46,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:46,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:46,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:46,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:40:46,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:46,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:46,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:46,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:46,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:46,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:46,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 13:40:46,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:46,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:46,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:46,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:46,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:46,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:46,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:46,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:46,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:46,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:46,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:46,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:46,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 13:40:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:46,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:46,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:46,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:46,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:46,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:40:46,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:46,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:46,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:46,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:46,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:46,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:46,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 13:40:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:46,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:46,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:46,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:46,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:46,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:46,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:46,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:46,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:46,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:46,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:46,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:46,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 13:40:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:46,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:46,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:46,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:46,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:46,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:46,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:46,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:46,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:46,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:46,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:46,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:46,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 13:40:46,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:46,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:46,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:46,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:46,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:46,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:46,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:46,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:46,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:46,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:46,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:46,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:46,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 13:40:46,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:46,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:46,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:46,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:46,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:46,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:46,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:46,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:46,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:46,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:46,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:46,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:46,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 13:40:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:46,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:46,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:46,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:46,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:46,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:46,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:46,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:46,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:46,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:46,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:46,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:46,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 13:40:46,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:46,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:46,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:46,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:46,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:46,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:46,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:46,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:46,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:46,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:46,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:46,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:46,307 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 22 proven. 42 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-09-25 13:40:46,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106752920] [2020-09-25 13:40:46,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:40:46,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 13:40:46,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55678602] [2020-09-25 13:40:46,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 13:40:46,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:46,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 13:40:46,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:40:46,309 INFO L87 Difference]: Start difference. First operand 108 states and 115 transitions. Second operand 16 states. [2020-09-25 13:40:46,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:46,894 INFO L93 Difference]: Finished difference Result 136 states and 148 transitions. [2020-09-25 13:40:46,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 13:40:46,894 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 108 [2020-09-25 13:40:46,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:46,896 INFO L225 Difference]: With dead ends: 136 [2020-09-25 13:40:46,896 INFO L226 Difference]: Without dead ends: 134 [2020-09-25 13:40:46,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=211, Invalid=719, Unknown=0, NotChecked=0, Total=930 [2020-09-25 13:40:46,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-09-25 13:40:46,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 120. [2020-09-25 13:40:46,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-25 13:40:46,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 128 transitions. [2020-09-25 13:40:46,912 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 128 transitions. Word has length 108 [2020-09-25 13:40:46,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:46,913 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 128 transitions. [2020-09-25 13:40:46,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 13:40:46,913 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 128 transitions. [2020-09-25 13:40:46,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-25 13:40:46,918 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:46,918 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 13:40:46,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 13:40:46,919 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:46,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:46,919 INFO L82 PathProgramCache]: Analyzing trace with hash -78339458, now seen corresponding path program 3 times [2020-09-25 13:40:46,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:46,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1347878081] [2020-09-25 13:40:46,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:46,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:47,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:47,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:51,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:51,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 13:40:51,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:40:51,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 13:40:51,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:51,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:51,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 13:40:51,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 13:40:51,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 13:40:51,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:52,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:52,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:52,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:52,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:52,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:52,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:52,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:40:52,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:52,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:52,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:52,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:52,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:52,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:52,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 13:40:52,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:52,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:52,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:52,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:52,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:52,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:40:52,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:52,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:52,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:52,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:52,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:52,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:52,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:40:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:52,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:52,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:52,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:52,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:52,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:40:52,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:52,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:52,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:52,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:52,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:52,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:52,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 13:40:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:52,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:52,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:52,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:52,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:52,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:52,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:52,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:52,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:52,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:52,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:52,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:52,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 13:40:52,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:52,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:52,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:52,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:52,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:52,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:40:52,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:52,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:52,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:52,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:52,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:52,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:40:52,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 13:40:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:52,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:52,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:52,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:52,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:52,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:52,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:52,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:52,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:52,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:52,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:52,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:52,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 13:40:52,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:52,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:52,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:52,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:52,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:52,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:52,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:52,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:52,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:52,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:52,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:52,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:52,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 13:40:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:52,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:52,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:52,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:52,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:52,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:40:52,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:52,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:52,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:52,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:52,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:52,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:52,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 13:40:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:52,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:52,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:52,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:52,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:52,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:40:52,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:52,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:52,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:52,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:52,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:52,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:52,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 13:40:52,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:52,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:52,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:52,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:52,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:52,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:52,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:52,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:52,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:52,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:52,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:52,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:52,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 13:40:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:52,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:52,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:52,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:52,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:52,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:52,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:52,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:52,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:40:52,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:52,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:40:52,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:52,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 13:40:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:52,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:52,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:52,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:52,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:52,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:52,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:52,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:52,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:52,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:52,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:52,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:52,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 13:40:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:52,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:52,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:52,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:52,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:52,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:40:52,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:52,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:52,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:52,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:52,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:52,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:52,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-25 13:40:52,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:52,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:52,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:52,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:52,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:52,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:52,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:52,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:52,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:52,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:52,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:52,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:52,330 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 52 proven. 54 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2020-09-25 13:40:52,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1347878081] [2020-09-25 13:40:52,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:40:52,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 13:40:52,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986487049] [2020-09-25 13:40:52,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 13:40:52,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:52,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 13:40:52,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:40:52,334 INFO L87 Difference]: Start difference. First operand 120 states and 128 transitions. Second operand 12 states. [2020-09-25 13:40:52,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:52,794 INFO L93 Difference]: Finished difference Result 124 states and 132 transitions. [2020-09-25 13:40:52,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 13:40:52,794 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 121 [2020-09-25 13:40:52,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:52,796 INFO L225 Difference]: With dead ends: 124 [2020-09-25 13:40:52,796 INFO L226 Difference]: Without dead ends: 119 [2020-09-25 13:40:52,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2020-09-25 13:40:52,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-09-25 13:40:52,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2020-09-25 13:40:52,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-09-25 13:40:52,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 125 transitions. [2020-09-25 13:40:52,805 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 125 transitions. Word has length 121 [2020-09-25 13:40:52,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:52,806 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 125 transitions. [2020-09-25 13:40:52,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 13:40:52,806 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 125 transitions. [2020-09-25 13:40:52,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 13:40:52,813 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:52,813 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:52,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 13:40:52,814 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:52,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:52,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1897035733, now seen corresponding path program 3 times [2020-09-25 13:40:52,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:52,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262449947] [2020-09-25 13:40:52,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:52,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:52,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:52,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:53,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:53,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:54,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:55,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:56,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:57,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:57,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 13:40:57,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:40:57,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 13:40:57,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:57,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:57,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 13:40:57,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 13:40:57,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-09-25 13:40:57,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:58,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:58,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:58,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:58,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:58,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:58,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:40:58,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:58,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:58,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:58,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:58,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:58,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:58,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 13:40:58,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:58,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:58,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:58,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:58,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:58,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 13:40:58,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:58,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:58,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:58,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:58,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:58,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:40:58,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:40:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:58,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:58,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:58,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:58,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:58,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:40:58,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:58,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:58,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:58,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:58,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:58,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:58,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 13:40:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:58,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:58,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:58,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:58,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:58,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:40:58,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:58,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:58,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:58,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:58,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:58,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:58,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 13:40:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:58,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:58,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:58,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:58,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:58,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:40:58,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:58,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:58,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:58,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:58,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:58,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:58,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 13:40:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:58,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:58,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:58,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:58,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:58,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:58,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:58,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:58,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:58,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:58,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:58,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:58,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 13:40:58,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:58,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:58,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:58,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:58,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:58,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:58,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:58,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:58,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:58,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:58,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:58,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:58,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 13:40:58,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:58,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:58,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:58,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:58,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:58,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:40:58,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:58,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:58,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:58,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:58,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:58,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:58,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 13:40:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:58,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:58,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:58,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:58,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:58,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:58,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:58,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:58,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:58,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:58,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:58,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:58,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 13:40:58,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:58,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:58,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:58,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:58,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:58,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:58,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:58,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:58,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:58,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:58,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:58,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:40:58,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 13:40:58,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:58,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:58,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:58,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:58,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:58,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:58,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:58,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:58,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:58,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:58,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:58,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:58,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 13:40:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:58,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:58,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:58,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:58,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:58,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:58,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:58,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:58,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:58,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:58,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:58,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:58,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 13:40:58,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:58,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:58,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:58,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:58,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:58,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:40:58,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:58,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:58,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:58,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:58,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:58,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:40:58,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-09-25 13:40:58,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:58,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:58,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:58,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:58,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:58,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:58,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:58,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:58,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:58,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:58,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:58,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:58,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-25 13:40:58,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:58,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:58,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:58,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:58,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:58,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:40:58,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:58,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:58,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:58,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:58,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:58,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:58,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-25 13:40:58,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:58,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:58,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:58,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:58,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:58,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:58,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:58,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:58,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:58,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:58,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:58,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:58,755 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 30 proven. 84 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-09-25 13:40:58,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262449947] [2020-09-25 13:40:58,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:40:58,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 13:40:58,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210995481] [2020-09-25 13:40:58,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 13:40:58,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:58,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 13:40:58,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2020-09-25 13:40:58,759 INFO L87 Difference]: Start difference. First operand 119 states and 125 transitions. Second operand 21 states. [2020-09-25 13:40:59,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:59,747 INFO L93 Difference]: Finished difference Result 150 states and 161 transitions. [2020-09-25 13:40:59,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 13:40:59,748 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 138 [2020-09-25 13:40:59,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:59,750 INFO L225 Difference]: With dead ends: 150 [2020-09-25 13:40:59,750 INFO L226 Difference]: Without dead ends: 148 [2020-09-25 13:40:59,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=339, Invalid=1221, Unknown=0, NotChecked=0, Total=1560 [2020-09-25 13:40:59,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-09-25 13:40:59,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 137. [2020-09-25 13:40:59,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-09-25 13:40:59,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 146 transitions. [2020-09-25 13:40:59,762 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 146 transitions. Word has length 138 [2020-09-25 13:40:59,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:59,763 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 146 transitions. [2020-09-25 13:40:59,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 13:40:59,763 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 146 transitions. [2020-09-25 13:40:59,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 13:40:59,765 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:59,766 INFO L422 BasicCegarLoop]: trace histogram [20, 19, 19, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:59,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 13:40:59,766 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:59,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:59,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1751458142, now seen corresponding path program 4 times [2020-09-25 13:40:59,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:59,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800047268] [2020-09-25 13:40:59,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:59,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:59,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:01,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:01,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:04,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:04,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:04,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:04,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-09-25 13:41:04,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:41:04,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5136 [2020-09-25 13:41:04,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:04,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:04,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 13:41:04,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 13:41:04,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-09-25 13:41:04,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:41:05,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:41:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:05,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:05,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:05,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:41:05,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:05,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:41:05,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:05,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:05,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:41:05,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:05,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:41:05,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:41:05,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 13:41:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:05,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:05,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:05,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:41:05,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:05,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:41:05,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:05,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:05,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:41:05,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:05,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:41:05,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:41:05,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:41:05,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:05,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:05,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:05,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:41:05,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:05,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:41:05,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:05,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:05,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:41:05,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:05,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:41:05,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:41:05,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 13:41:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:05,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:05,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:05,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:41:05,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:05,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:41:05,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:05,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:05,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:41:05,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:05,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:41:05,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:41:05,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 13:41:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:05,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:05,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:05,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:41:05,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:05,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:41:05,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:05,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:05,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:41:05,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:05,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:41:05,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:41:05,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 13:41:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:05,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:05,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:05,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:41:05,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:05,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:41:05,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:05,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:05,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:41:05,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:05,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:41:05,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:41:05,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 13:41:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:05,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:05,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:05,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:41:05,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:05,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:41:05,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:05,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:05,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:41:05,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:05,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:41:05,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:05,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 13:41:05,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:05,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:05,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:05,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:41:05,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:05,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:41:05,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:05,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:05,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:41:05,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:05,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:41:05,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:05,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 13:41:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:05,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:05,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:05,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:41:05,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:05,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:41:05,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:05,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:05,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:41:05,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:05,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:41:05,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:41:05,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 13:41:05,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:05,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:05,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:05,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:41:05,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:05,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:41:05,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:05,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:05,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:41:05,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:05,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:41:05,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:41:05,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 13:41:05,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:05,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:05,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:05,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:41:05,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:05,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:41:05,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:05,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:05,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:41:05,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:05,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:41:05,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:41:05,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 13:41:05,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:05,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:05,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:05,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:41:05,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:05,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:41:05,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:05,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:05,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:41:05,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:05,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:41:05,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:41:05,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 13:41:05,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:05,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:05,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:05,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:41:05,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:05,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:41:05,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:05,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:05,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:41:05,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:05,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:41:05,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:41:05,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-09-25 13:41:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:05,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:05,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:05,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:41:05,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:05,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:41:05,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:05,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:05,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:41:05,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:05,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:41:05,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:41:05,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-25 13:41:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:05,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:05,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:05,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:41:05,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:05,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:41:05,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:05,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:05,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:41:05,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:05,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:41:05,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:41:05,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-25 13:41:05,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:05,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:05,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:05,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:41:05,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:05,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:41:05,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:05,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:05,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:41:05,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:05,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:41:05,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:41:05,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-25 13:41:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:05,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:05,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:05,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:41:05,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:05,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:41:05,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:05,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:05,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:41:05,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:05,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:41:05,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:41:05,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-09-25 13:41:05,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:05,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:05,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:05,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:41:05,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:05,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:41:05,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:05,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:05,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:41:05,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:05,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:41:05,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:41:05,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-25 13:41:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:05,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:05,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:05,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:41:05,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:05,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:41:05,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:05,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:05,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:41:05,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:05,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:41:05,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:41:05,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-25 13:41:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:41:05,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:41:05,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:41:05,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:41:05,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:41:05,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:41:05,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:41:05,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:41:05,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:41:05,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:41:05,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:41:05,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:41:05,720 INFO L134 CoverageAnalysis]: Checked inductivity of 862 backedges. 38 proven. 132 refuted. 0 times theorem prover too weak. 692 trivial. 0 not checked. [2020-09-25 13:41:05,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800047268] [2020-09-25 13:41:05,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:41:05,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 13:41:05,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501038065] [2020-09-25 13:41:05,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 13:41:05,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:41:05,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 13:41:05,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2020-09-25 13:41:05,722 INFO L87 Difference]: Start difference. First operand 137 states and 146 transitions. Second operand 23 states. [2020-09-25 13:41:06,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:41:06,289 INFO L93 Difference]: Finished difference Result 139 states and 147 transitions. [2020-09-25 13:41:06,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 13:41:06,290 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 168 [2020-09-25 13:41:06,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:41:06,291 INFO L225 Difference]: With dead ends: 139 [2020-09-25 13:41:06,291 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 13:41:06,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 13:41:06,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 13:41:06,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 13:41:06,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 13:41:06,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 13:41:06,293 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 168 [2020-09-25 13:41:06,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:41:06,294 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 13:41:06,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 13:41:06,294 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 13:41:06,294 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 13:41:06,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 13:41:06,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 13:41:06,533 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2020-09-25 13:41:06,700 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2020-09-25 13:41:06,870 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2020-09-25 13:41:07,195 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 28 [2020-09-25 13:41:07,418 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 35 [2020-09-25 13:41:07,594 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 35 [2020-09-25 13:41:07,646 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 13:41:07,646 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 13:41:07,646 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 13:41:07,646 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 13:41:07,647 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 13:41:07,647 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 13:41:07,647 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-25 13:41:07,647 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-25 13:41:07,647 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 13:41:07,647 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-25 13:41:07,647 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-25 13:41:07,647 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-25 13:41:07,648 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 45) no Hoare annotation was computed. [2020-09-25 13:41:07,648 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 13:41:07,648 INFO L271 CegarLoopResult]: At program point L44(lines 14 45) the Hoare annotation is: true [2020-09-25 13:41:07,648 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-25 13:41:07,648 INFO L268 CegarLoopResult]: For program point L40-1(line 40) no Hoare annotation was computed. [2020-09-25 13:41:07,648 INFO L264 CegarLoopResult]: At program point L36(lines 26 37) the Hoare annotation is: (let ((.cse0 (= main_~bufferlen~0 (+ main_~buflim~0 2))) (.cse1 (+ main_~buf~0 main_~inlen~0))) (or (and (= main_~in~0 0) .cse0 (<= (+ main_~buflim~0 3) .cse1) (< main_~buf~0 (+ main_~buflim~0 1)) (= main_~buf~0 0)) (and (<= 1 main_~buf~0) .cse0 (<= main_~buf~0 main_~buflim~0) (<= (+ main_~in~0 main_~buflim~0 3) .cse1) (<= (+ main_~bufferlen~0 1) main_~inlen~0) (<= 0 main_~in~0)))) [2020-09-25 13:41:07,648 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-25 13:41:07,649 INFO L268 CegarLoopResult]: For program point L32-1(line 32) no Hoare annotation was computed. [2020-09-25 13:41:07,649 INFO L268 CegarLoopResult]: For program point L28(lines 28 29) no Hoare annotation was computed. [2020-09-25 13:41:07,649 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 13:41:07,649 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 13:41:07,649 INFO L268 CegarLoopResult]: For program point L20-1(lines 14 45) no Hoare annotation was computed. [2020-09-25 13:41:07,649 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 13:41:07,649 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-25 13:41:07,650 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-25 13:41:07,650 INFO L264 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: (and (<= 1 main_~buf~0) (<= (+ main_~buf~0 1) main_~bufferlen~0)) [2020-09-25 13:41:07,650 INFO L264 CegarLoopResult]: At program point L41-1(line 41) the Hoare annotation is: (and (<= (+ main_~buf~0 1) main_~bufferlen~0) (<= 2 main_~bufferlen~0)) [2020-09-25 13:41:07,650 INFO L268 CegarLoopResult]: For program point L33(lines 33 34) no Hoare annotation was computed. [2020-09-25 13:41:07,650 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 13:41:07,650 INFO L268 CegarLoopResult]: For program point L21(lines 14 45) no Hoare annotation was computed. [2020-09-25 13:41:07,650 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 13:41:07,651 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-25 13:41:07,651 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2020-09-25 13:41:07,651 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 45) no Hoare annotation was computed. [2020-09-25 13:41:07,651 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-25 13:41:07,651 INFO L264 CegarLoopResult]: At program point L38(line 38) the Hoare annotation is: (and (<= 0 main_~buf~0) (<= (+ main_~buf~0 2) main_~bufferlen~0)) [2020-09-25 13:41:07,651 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-25 13:41:07,651 INFO L268 CegarLoopResult]: For program point L34-1(line 34) no Hoare annotation was computed. [2020-09-25 13:41:07,652 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (let ((.cse3 (+ main_~buf~0 2))) (let ((.cse0 (+ main_~buflim~0 2)) (.cse1 (+ main_~buf~0 main_~inlen~0)) (.cse2 (not (= .cse3 main_~bufferlen~0)))) (or (and (= main_~in~0 0) (= main_~bufferlen~0 .cse0) (<= (+ main_~buflim~0 3) .cse1) (< main_~buf~0 (+ main_~buflim~0 1)) (= main_~buf~0 0) .cse2) (and (<= 1 main_~buf~0) (<= main_~bufferlen~0 .cse0) (<= .cse0 main_~bufferlen~0) (<= .cse3 main_~bufferlen~0) (<= (+ main_~in~0 main_~buflim~0 3) .cse1) .cse2 (<= 0 main_~in~0) (<= (+ main_~bufferlen~0 1) main_~inlen~0))))) [2020-09-25 13:41:07,652 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 45) the Hoare annotation is: true [2020-09-25 13:41:07,652 INFO L264 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: (let ((.cse3 (+ main_~buf~0 2))) (let ((.cse0 (+ main_~buflim~0 2)) (.cse1 (+ main_~buf~0 main_~inlen~0)) (.cse2 (not (= .cse3 main_~bufferlen~0)))) (or (and (= main_~in~0 0) (= main_~bufferlen~0 .cse0) (<= (+ main_~buflim~0 3) .cse1) (< main_~buf~0 (+ main_~buflim~0 1)) (= main_~buf~0 0) .cse2) (and (<= 1 main_~buf~0) (<= main_~bufferlen~0 .cse0) (<= .cse0 main_~bufferlen~0) (<= .cse3 main_~bufferlen~0) (<= (+ main_~in~0 main_~buflim~0 3) .cse1) .cse2 (<= 0 main_~in~0) (<= (+ main_~bufferlen~0 1) main_~inlen~0))))) [2020-09-25 13:41:07,652 INFO L268 CegarLoopResult]: For program point L26-1(lines 26 37) no Hoare annotation was computed. [2020-09-25 13:41:07,652 INFO L268 CegarLoopResult]: For program point L26-2(line 26) no Hoare annotation was computed. [2020-09-25 13:41:07,652 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 13:41:07,652 INFO L268 CegarLoopResult]: For program point L26-4(line 26) no Hoare annotation was computed. [2020-09-25 13:41:07,653 INFO L264 CegarLoopResult]: At program point L26-5(lines 26 37) the Hoare annotation is: (and (<= 0 main_~buf~0) (<= (+ main_~buf~0 2) main_~bufferlen~0)) [2020-09-25 13:41:07,653 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 13:41:07,653 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-09-25 13:41:07,653 INFO L268 CegarLoopResult]: For program point L43-1(line 43) no Hoare annotation was computed. [2020-09-25 13:41:07,653 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-09-25 13:41:07,653 INFO L264 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (and (<= 1 main_~buf~0) (= main_~bufferlen~0 (+ main_~buflim~0 2)) (<= (+ main_~buf~0 2) main_~bufferlen~0) (<= (+ main_~in~0 main_~buflim~0 3) (+ main_~buf~0 main_~inlen~0)) (<= (+ main_~bufferlen~0 1) main_~inlen~0) (<= 0 main_~in~0)) [2020-09-25 13:41:07,653 INFO L264 CegarLoopResult]: At program point L35-1(line 35) the Hoare annotation is: (and (<= 1 main_~buf~0) (= main_~bufferlen~0 (+ main_~buflim~0 2)) (<= (+ main_~buf~0 2) main_~bufferlen~0) (<= (+ main_~in~0 main_~buflim~0 3) (+ main_~buf~0 main_~inlen~0)) (<= (+ main_~bufferlen~0 1) main_~inlen~0) (<= 0 main_~in~0)) [2020-09-25 13:41:07,653 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-25 13:41:07,654 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-25 13:41:07,654 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 13:41:07,654 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 13:41:07,654 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-25 13:41:07,654 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 13:41:07,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:41:07 BoogieIcfgContainer [2020-09-25 13:41:07,677 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 13:41:07,679 INFO L168 Benchmark]: Toolchain (without parser) took 47844.32 ms. Allocated memory was 147.3 MB in the beginning and 444.6 MB in the end (delta: 297.3 MB). Free memory was 103.7 MB in the beginning and 358.7 MB in the end (delta: -255.0 MB). Peak memory consumption was 313.5 MB. Max. memory is 7.1 GB. [2020-09-25 13:41:07,680 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 13:41:07,680 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.04 ms. Allocated memory is still 147.3 MB. Free memory was 103.1 MB in the beginning and 92.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-25 13:41:07,681 INFO L168 Benchmark]: Boogie Preprocessor took 120.13 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 92.9 MB in the beginning and 182.9 MB in the end (delta: -90.0 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-09-25 13:41:07,682 INFO L168 Benchmark]: RCFGBuilder took 404.63 ms. Allocated memory is still 203.9 MB. Free memory was 182.9 MB in the beginning and 166.6 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2020-09-25 13:41:07,683 INFO L168 Benchmark]: TraceAbstraction took 46994.09 ms. Allocated memory was 203.9 MB in the beginning and 444.6 MB in the end (delta: 240.6 MB). Free memory was 165.9 MB in the beginning and 358.7 MB in the end (delta: -192.8 MB). Peak memory consumption was 319.1 MB. Max. memory is 7.1 GB. [2020-09-25 13:41:07,686 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 317.04 ms. Allocated memory is still 147.3 MB. Free memory was 103.1 MB in the beginning and 92.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.13 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 92.9 MB in the beginning and 182.9 MB in the end (delta: -90.0 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 404.63 ms. Allocated memory is still 203.9 MB. Free memory was 182.9 MB in the beginning and 166.6 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 46994.09 ms. Allocated memory was 203.9 MB in the beginning and 444.6 MB in the end (delta: 240.6 MB). Free memory was 165.9 MB in the beginning and 358.7 MB in the end (delta: -192.8 MB). Peak memory consumption was 319.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: ((((in == 0 && bufferlen == buflim + 2) && buflim + 3 <= buf + inlen) && buf < buflim + 1) && buf == 0) || (((((1 <= buf && bufferlen == buflim + 2) && buf <= buflim) && in + buflim + 3 <= buf + inlen) && bufferlen + 1 <= inlen) && 0 <= in) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 45.5s, OverallIterations: 17, TraceHistogramMax: 20, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 885 SDtfs, 1073 SDslu, 4331 SDs, 0 SdLazy, 2388 SolverSat, 451 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 582 GetRequests, 304 SyntacticMatches, 4 SemanticMatches, 274 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1040 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=137occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 17 MinimizatonAttempts, 88 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 60 PreInvPairs, 104 NumberOfFragments, 299 HoareAnnotationTreeSize, 60 FomulaSimplifications, 3286 FormulaSimplificationTreeSizeReduction, 0.6s HoareSimplificationTime, 15 FomulaSimplificationsInter, 2160 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 38.6s InterpolantComputationTime, 1297 NumberOfCodeBlocks, 1297 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 1280 ConstructedInterpolants, 0 QuantifiedInterpolants, 470084 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 8 PerfectInterpolantSequences, 2566/2932 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 proved your program to be correct! Received shutdown request...