/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-programs/copysome1-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 18:24:57,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 18:24:57,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 18:24:57,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 18:24:57,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 18:24:57,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 18:24:57,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 18:24:57,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 18:24:57,508 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 18:24:57,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 18:24:57,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 18:24:57,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 18:24:57,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 18:24:57,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 18:24:57,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 18:24:57,515 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 18:24:57,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 18:24:57,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 18:24:57,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 18:24:57,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 18:24:57,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 18:24:57,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 18:24:57,524 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 18:24:57,525 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 18:24:57,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 18:24:57,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 18:24:57,528 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 18:24:57,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 18:24:57,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 18:24:57,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 18:24:57,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 18:24:57,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 18:24:57,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 18:24:57,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 18:24:57,534 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 18:24:57,534 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 18:24:57,535 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 18:24:57,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 18:24:57,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 18:24:57,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 18:24:57,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 18:24:57,538 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 18:24:57,568 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 18:24:57,568 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 18:24:57,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 18:24:57,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 18:24:57,570 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 18:24:57,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 18:24:57,570 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 18:24:57,571 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 18:24:57,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 18:24:57,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 18:24:57,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 18:24:57,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 18:24:57,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 18:24:57,574 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 18:24:57,575 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 18:24:57,575 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 18:24:57,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 18:24:57,576 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 18:24:57,576 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 18:24:57,576 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 18:24:57,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 18:24:57,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 18:24:57,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 18:24:57,577 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 18:24:57,577 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 18:24:57,578 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 18:24:57,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 18:24:57,578 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 18:24:57,578 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 18:24:57,578 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 18:24:57,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 18:24:57,920 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 18:24:57,924 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 18:24:57,926 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 18:24:57,926 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 18:24:57,927 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-programs/copysome1-1.i [2020-10-14 18:24:57,986 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00c95fb3d/052e5ccfd1eb4a718ee0dd02f8777ba2/FLAG52661f402 [2020-10-14 18:24:58,445 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 18:24:58,445 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-programs/copysome1-1.i [2020-10-14 18:24:58,452 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00c95fb3d/052e5ccfd1eb4a718ee0dd02f8777ba2/FLAG52661f402 [2020-10-14 18:24:58,830 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00c95fb3d/052e5ccfd1eb4a718ee0dd02f8777ba2 [2020-10-14 18:24:58,838 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 18:24:58,840 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 18:24:58,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 18:24:58,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 18:24:58,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 18:24:58,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:24:58" (1/1) ... [2020-10-14 18:24:58,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dccfc7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:24:58, skipping insertion in model container [2020-10-14 18:24:58,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:24:58" (1/1) ... [2020-10-14 18:24:58,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 18:24:58,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 18:24:59,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:24:59,036 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 18:24:59,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:24:59,074 INFO L208 MainTranslator]: Completed translation [2020-10-14 18:24:59,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:24:59 WrapperNode [2020-10-14 18:24:59,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 18:24:59,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 18:24:59,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 18:24:59,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 18:24:59,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:24:59" (1/1) ... [2020-10-14 18:24:59,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:24:59" (1/1) ... [2020-10-14 18:24:59,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:24:59" (1/1) ... [2020-10-14 18:24:59,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:24:59" (1/1) ... [2020-10-14 18:24:59,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:24:59" (1/1) ... [2020-10-14 18:24:59,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:24:59" (1/1) ... [2020-10-14 18:24:59,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:24:59" (1/1) ... [2020-10-14 18:24:59,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 18:24:59,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 18:24:59,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 18:24:59,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 18:24:59,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:24:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 18:24:59,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 18:24:59,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 18:24:59,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 18:24:59,261 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 18:24:59,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 18:24:59,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 18:24:59,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 18:24:59,261 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 18:24:59,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 18:24:59,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 18:24:59,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 18:24:59,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 18:24:59,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 18:24:59,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 18:24:59,490 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 18:24:59,490 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 18:24:59,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:24:59 BoogieIcfgContainer [2020-10-14 18:24:59,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 18:24:59,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 18:24:59,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 18:24:59,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 18:24:59,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 06:24:58" (1/3) ... [2020-10-14 18:24:59,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233b722f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:24:59, skipping insertion in model container [2020-10-14 18:24:59,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:24:59" (2/3) ... [2020-10-14 18:24:59,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233b722f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:24:59, skipping insertion in model container [2020-10-14 18:24:59,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:24:59" (3/3) ... [2020-10-14 18:24:59,503 INFO L109 eAbstractionObserver]: Analyzing ICFG copysome1-1.i [2020-10-14 18:24:59,515 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 18:24:59,524 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 18:24:59,542 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 18:24:59,573 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 18:24:59,574 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 18:24:59,574 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 18:24:59,574 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 18:24:59,574 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 18:24:59,574 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 18:24:59,574 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 18:24:59,575 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 18:24:59,598 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-10-14 18:24:59,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-14 18:24:59,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:24:59,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:24:59,607 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:24:59,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:24:59,615 INFO L82 PathProgramCache]: Analyzing trace with hash -908266250, now seen corresponding path program 1 times [2020-10-14 18:24:59,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:24:59,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1186359883] [2020-10-14 18:24:59,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:24:59,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:24:59,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:24:59,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:24:59,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:24:59,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 18:24:59,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:24:59,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 18:24:59,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:24:59,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:24:59,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:24:59,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 18:24:59,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:24:59,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 18:25:00,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:25:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:00,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:00,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:00,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:25:00,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:00,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 18:25:00,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:00,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:00,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:25:00,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:00,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:25:00,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:00,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:25:00,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1186359883] [2020-10-14 18:25:00,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:25:00,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 18:25:00,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406742220] [2020-10-14 18:25:00,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 18:25:00,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:25:00,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 18:25:00,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 18:25:00,113 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2020-10-14 18:25:00,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:25:00,211 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2020-10-14 18:25:00,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 18:25:00,213 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-14 18:25:00,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:25:00,223 INFO L225 Difference]: With dead ends: 50 [2020-10-14 18:25:00,223 INFO L226 Difference]: Without dead ends: 24 [2020-10-14 18:25:00,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 18:25:00,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-14 18:25:00,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-14 18:25:00,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-14 18:25:00,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-10-14 18:25:00,272 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 16 [2020-10-14 18:25:00,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:25:00,272 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-10-14 18:25:00,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 18:25:00,273 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-10-14 18:25:00,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-14 18:25:00,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:25:00,274 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:25:00,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 18:25:00,275 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:25:00,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:25:00,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1720229721, now seen corresponding path program 1 times [2020-10-14 18:25:00,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:25:00,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933850138] [2020-10-14 18:25:00,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:25:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:00,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:00,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:00,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:00,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 18:25:00,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:25:00,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-14 18:25:00,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:00,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:00,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:00,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:25:00,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 18:25:00,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:00,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:25:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:00,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:00,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:00,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:25:00,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:00,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:25:00,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:00,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:00,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:25:00,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:00,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:25:00,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:25:00,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:25:00,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933850138] [2020-10-14 18:25:00,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:25:00,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 18:25:00,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591489086] [2020-10-14 18:25:00,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 18:25:00,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:25:00,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 18:25:00,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 18:25:00,557 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 4 states. [2020-10-14 18:25:00,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:25:00,668 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-10-14 18:25:00,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 18:25:00,669 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-14 18:25:00,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:25:00,670 INFO L225 Difference]: With dead ends: 45 [2020-10-14 18:25:00,670 INFO L226 Difference]: Without dead ends: 29 [2020-10-14 18:25:00,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 18:25:00,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-14 18:25:00,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2020-10-14 18:25:00,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-14 18:25:00,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-14 18:25:00,680 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 16 [2020-10-14 18:25:00,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:25:00,681 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-14 18:25:00,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 18:25:00,681 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-14 18:25:00,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 18:25:00,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:25:00,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:25:00,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 18:25:00,683 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:25:00,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:25:00,683 INFO L82 PathProgramCache]: Analyzing trace with hash -2103920742, now seen corresponding path program 1 times [2020-10-14 18:25:00,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:25:00,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2109295110] [2020-10-14 18:25:00,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:25:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:00,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:00,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:00,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:00,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:01,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:01,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:01,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 18:25:01,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:25:01,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 708 [2020-10-14 18:25:01,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:01,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:01,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:25:01,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 18:25:01,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 18:25:01,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:01,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:25:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:01,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:01,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:01,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:25:01,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:01,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:25:01,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:01,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:01,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:25:01,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:01,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:25:01,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:01,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 18:25:01,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2109295110] [2020-10-14 18:25:01,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:25:01,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 18:25:01,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767572053] [2020-10-14 18:25:01,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 18:25:01,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:25:01,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 18:25:01,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:25:01,524 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 6 states. [2020-10-14 18:25:01,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:25:01,729 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2020-10-14 18:25:01,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 18:25:01,730 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-14 18:25:01,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:25:01,734 INFO L225 Difference]: With dead ends: 54 [2020-10-14 18:25:01,734 INFO L226 Difference]: Without dead ends: 43 [2020-10-14 18:25:01,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 18:25:01,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-14 18:25:01,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2020-10-14 18:25:01,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 18:25:01,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2020-10-14 18:25:01,748 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 21 [2020-10-14 18:25:01,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:25:01,749 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2020-10-14 18:25:01,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 18:25:01,749 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2020-10-14 18:25:01,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 18:25:01,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:25:01,750 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:25:01,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 18:25:01,751 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:25:01,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:25:01,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1710893732, now seen corresponding path program 1 times [2020-10-14 18:25:01,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:25:01,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215872453] [2020-10-14 18:25:01,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:25:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:01,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:01,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:01,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:02,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:02,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 18:25:02,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:25:02,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 458 [2020-10-14 18:25:02,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:02,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:02,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 18:25:02,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 18:25:02,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 18:25:02,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:02,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:25:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:02,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:02,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:02,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:25:02,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:02,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:25:02,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:02,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:02,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:25:02,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:02,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:25:02,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:25:02,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 18:25:02,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215872453] [2020-10-14 18:25:02,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:25:02,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 18:25:02,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434841445] [2020-10-14 18:25:02,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 18:25:02,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:25:02,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 18:25:02,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 18:25:02,430 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 9 states. [2020-10-14 18:25:02,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:25:02,908 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2020-10-14 18:25:02,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 18:25:02,910 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-14 18:25:02,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:25:02,912 INFO L225 Difference]: With dead ends: 56 [2020-10-14 18:25:02,912 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 18:25:02,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-10-14 18:25:02,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 18:25:02,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 44. [2020-10-14 18:25:02,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 18:25:02,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2020-10-14 18:25:02,938 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 21 [2020-10-14 18:25:02,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:25:02,939 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2020-10-14 18:25:02,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 18:25:02,939 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2020-10-14 18:25:02,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 18:25:02,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:25:02,942 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] [2020-10-14 18:25:02,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 18:25:02,944 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:25:02,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:25:02,946 INFO L82 PathProgramCache]: Analyzing trace with hash -669439966, now seen corresponding path program 1 times [2020-10-14 18:25:02,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:25:02,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805195442] [2020-10-14 18:25:02,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:25:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:02,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:02,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:03,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:03,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:03,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:03,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:03,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:03,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:03,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 18:25:03,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 18:25:03,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 781 [2020-10-14 18:25:03,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:03,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:03,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 18:25:03,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:25:03,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 18:25:03,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:03,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:25:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:03,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:03,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:03,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:25:03,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:03,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:25:03,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:03,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:03,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:25:03,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:03,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:25:03,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:03,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 18:25:03,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805195442] [2020-10-14 18:25:03,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:25:03,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 18:25:03,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730143496] [2020-10-14 18:25:03,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 18:25:03,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:25:03,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 18:25:03,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:25:03,798 INFO L87 Difference]: Start difference. First operand 44 states and 54 transitions. Second operand 5 states. [2020-10-14 18:25:03,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:25:03,875 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2020-10-14 18:25:03,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 18:25:03,876 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-14 18:25:03,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:25:03,879 INFO L225 Difference]: With dead ends: 58 [2020-10-14 18:25:03,879 INFO L226 Difference]: Without dead ends: 41 [2020-10-14 18:25:03,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:25:03,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-14 18:25:03,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2020-10-14 18:25:03,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-14 18:25:03,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-10-14 18:25:03,887 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 24 [2020-10-14 18:25:03,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:25:03,887 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-10-14 18:25:03,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 18:25:03,888 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-10-14 18:25:03,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 18:25:03,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:25:03,889 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:25:03,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 18:25:03,889 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:25:03,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:25:03,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1351554071, now seen corresponding path program 2 times [2020-10-14 18:25:03,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:25:03,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652572222] [2020-10-14 18:25:03,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:25:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:03,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:03,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:03,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:04,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:04,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 18:25:04,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:25:04,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 531 [2020-10-14 18:25:04,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:04,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:04,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 18:25:04,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:25:04,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 18:25:04,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 18:25:04,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:25:04,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:04,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:04,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:04,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:25:04,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:04,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:25:04,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:04,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:04,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:25:04,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:04,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:25:04,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:04,775 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 18:25:04,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652572222] [2020-10-14 18:25:04,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:25:04,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 18:25:04,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78098032] [2020-10-14 18:25:04,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:25:04,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:25:04,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:25:04,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:25:04,779 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 10 states. [2020-10-14 18:25:05,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:25:05,068 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-10-14 18:25:05,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 18:25:05,068 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-10-14 18:25:05,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:25:05,070 INFO L225 Difference]: With dead ends: 51 [2020-10-14 18:25:05,070 INFO L226 Difference]: Without dead ends: 49 [2020-10-14 18:25:05,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:25:05,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-14 18:25:05,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 34. [2020-10-14 18:25:05,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-14 18:25:05,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-14 18:25:05,077 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 24 [2020-10-14 18:25:05,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:25:05,077 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-14 18:25:05,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:25:05,078 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-14 18:25:05,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 18:25:05,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:25:05,079 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:25:05,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 18:25:05,079 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:25:05,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:25:05,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1749162411, now seen corresponding path program 1 times [2020-10-14 18:25:05,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:25:05,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411959631] [2020-10-14 18:25:05,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:25:05,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:05,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:05,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:05,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:05,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 18:25:05,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:25:05,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 18:25:05,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:05,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:05,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 18:25:05,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 18:25:05,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 18:25:05,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:05,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:25:05,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:05,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:05,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:05,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:25:05,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:05,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:25:05,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:05,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:05,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:25:05,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:05,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:25:05,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:05,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 18:25:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:05,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:05,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:05,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:05,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:05,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:25:05,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:05,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:05,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:25:05,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:25:05,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:25:05,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:05,262 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 18:25:05,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411959631] [2020-10-14 18:25:05,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:25:05,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 18:25:05,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087397097] [2020-10-14 18:25:05,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 18:25:05,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:25:05,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 18:25:05,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:25:05,265 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2020-10-14 18:25:05,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:25:05,347 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2020-10-14 18:25:05,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 18:25:05,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-14 18:25:05,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:25:05,348 INFO L225 Difference]: With dead ends: 66 [2020-10-14 18:25:05,348 INFO L226 Difference]: Without dead ends: 41 [2020-10-14 18:25:05,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:25:05,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-14 18:25:05,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2020-10-14 18:25:05,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-14 18:25:05,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-10-14 18:25:05,355 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 30 [2020-10-14 18:25:05,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:25:05,356 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-10-14 18:25:05,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 18:25:05,356 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-10-14 18:25:05,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 18:25:05,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:25:05,357 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 18:25:05,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 18:25:05,358 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:25:05,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:25:05,358 INFO L82 PathProgramCache]: Analyzing trace with hash 509519198, now seen corresponding path program 1 times [2020-10-14 18:25:05,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:25:05,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847831291] [2020-10-14 18:25:05,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:25:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:05,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:05,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:05,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:05,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:05,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:06,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:06,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 18:25:06,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:25:06,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1091 [2020-10-14 18:25:06,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:06,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:06,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 18:25:06,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 18:25:06,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 18:25:06,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:06,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:25:06,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:06,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:06,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:06,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:25:06,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:06,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:25:06,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:06,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:06,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:25:06,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:06,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:25:06,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:06,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 18:25:06,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:06,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:06,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:06,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:06,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:06,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:25:06,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:06,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:06,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:06,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:06,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:06,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:06,560 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 18:25:06,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847831291] [2020-10-14 18:25:06,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:25:06,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 18:25:06,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338847127] [2020-10-14 18:25:06,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 18:25:06,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:25:06,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 18:25:06,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 18:25:06,563 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 8 states. [2020-10-14 18:25:06,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:25:06,858 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2020-10-14 18:25:06,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 18:25:06,859 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-10-14 18:25:06,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:25:06,860 INFO L225 Difference]: With dead ends: 71 [2020-10-14 18:25:06,860 INFO L226 Difference]: Without dead ends: 60 [2020-10-14 18:25:06,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-14 18:25:06,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-14 18:25:06,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 50. [2020-10-14 18:25:06,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-14 18:25:06,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-10-14 18:25:06,870 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 35 [2020-10-14 18:25:06,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:25:06,870 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-10-14 18:25:06,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 18:25:06,871 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-10-14 18:25:06,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 18:25:06,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:25:06,874 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 18:25:06,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 18:25:06,874 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:25:06,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:25:06,875 INFO L82 PathProgramCache]: Analyzing trace with hash -2096504356, now seen corresponding path program 2 times [2020-10-14 18:25:06,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:25:06,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [400816027] [2020-10-14 18:25:06,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:25:06,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:06,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:06,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:07,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:08,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:08,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 18:25:08,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:25:08,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1329 [2020-10-14 18:25:08,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:08,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:08,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 18:25:08,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 18:25:08,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 18:25:08,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:08,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:25:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:08,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:08,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:08,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:25:08,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:08,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:25:08,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:08,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:08,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:25:08,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:08,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:25:08,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:08,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 18:25:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:08,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:08,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:08,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:08,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:08,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:25:08,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:08,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:08,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:08,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:08,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:08,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:08,402 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 18:25:08,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [400816027] [2020-10-14 18:25:08,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:25:08,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 18:25:08,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738742047] [2020-10-14 18:25:08,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 18:25:08,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:25:08,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 18:25:08,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 18:25:08,405 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 11 states. [2020-10-14 18:25:08,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:25:08,847 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2020-10-14 18:25:08,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 18:25:08,848 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2020-10-14 18:25:08,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:25:08,850 INFO L225 Difference]: With dead ends: 78 [2020-10-14 18:25:08,850 INFO L226 Difference]: Without dead ends: 76 [2020-10-14 18:25:08,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2020-10-14 18:25:08,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-14 18:25:08,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 66. [2020-10-14 18:25:08,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-14 18:25:08,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2020-10-14 18:25:08,860 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 35 [2020-10-14 18:25:08,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:25:08,861 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2020-10-14 18:25:08,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 18:25:08,861 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2020-10-14 18:25:08,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 18:25:08,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:25:08,862 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-14 18:25:08,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 18:25:08,863 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:25:08,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:25:08,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1447637982, now seen corresponding path program 1 times [2020-10-14 18:25:08,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:25:08,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976103928] [2020-10-14 18:25:08,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:25:08,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:08,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:08,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:08,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:08,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:09,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:09,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:10,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:11,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:11,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 18:25:11,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 18:25:11,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2748 [2020-10-14 18:25:11,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:11,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:11,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:25:11,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:25:11,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 18:25:11,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:11,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:25:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:11,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:11,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:11,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:25:11,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:11,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:25:11,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:11,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:11,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:25:11,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:11,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:25:11,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:11,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 18:25:11,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:11,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:11,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:11,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:11,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:11,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:25:11,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:11,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:11,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:11,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:11,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:11,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:11,691 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 18:25:11,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976103928] [2020-10-14 18:25:11,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:25:11,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 18:25:11,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478547279] [2020-10-14 18:25:11,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 18:25:11,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:25:11,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 18:25:11,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:25:11,694 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand 6 states. [2020-10-14 18:25:11,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:25:11,791 INFO L93 Difference]: Finished difference Result 84 states and 99 transitions. [2020-10-14 18:25:11,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 18:25:11,792 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-10-14 18:25:11,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:25:11,793 INFO L225 Difference]: With dead ends: 84 [2020-10-14 18:25:11,793 INFO L226 Difference]: Without dead ends: 62 [2020-10-14 18:25:11,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-14 18:25:11,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-14 18:25:11,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59. [2020-10-14 18:25:11,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 18:25:11,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-10-14 18:25:11,802 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 38 [2020-10-14 18:25:11,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:25:11,803 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-10-14 18:25:11,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 18:25:11,803 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-10-14 18:25:11,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 18:25:11,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:25:11,804 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:25:11,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 18:25:11,804 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:25:11,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:25:11,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1908633619, now seen corresponding path program 3 times [2020-10-14 18:25:11,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:25:11,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287644901] [2020-10-14 18:25:11,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:25:11,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:11,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:11,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:12,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:13,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:13,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 18:25:13,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:25:13,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1540 [2020-10-14 18:25:13,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:13,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:13,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 18:25:13,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:25:13,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 18:25:13,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:13,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:25:13,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:13,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:13,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:13,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:25:13,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:13,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:25:13,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:13,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:13,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:25:13,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:13,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:25:13,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:13,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 18:25:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:13,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:13,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:13,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:13,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:13,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:25:13,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:13,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:13,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:13,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:13,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:13,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:13,706 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 18:25:13,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287644901] [2020-10-14 18:25:13,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:25:13,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 18:25:13,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135063859] [2020-10-14 18:25:13,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 18:25:13,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:25:13,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 18:25:13,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:25:13,709 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 12 states. [2020-10-14 18:25:14,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:25:14,066 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2020-10-14 18:25:14,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 18:25:14,067 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 38 [2020-10-14 18:25:14,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:25:14,068 INFO L225 Difference]: With dead ends: 70 [2020-10-14 18:25:14,068 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 18:25:14,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:25:14,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 18:25:14,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 48. [2020-10-14 18:25:14,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-14 18:25:14,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-10-14 18:25:14,075 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 38 [2020-10-14 18:25:14,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:25:14,075 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-10-14 18:25:14,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 18:25:14,076 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-10-14 18:25:14,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 18:25:14,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:25:14,077 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:25:14,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 18:25:14,077 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:25:14,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:25:14,078 INFO L82 PathProgramCache]: Analyzing trace with hash -104587989, now seen corresponding path program 4 times [2020-10-14 18:25:14,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:25:14,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887640516] [2020-10-14 18:25:14,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:25:14,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:14,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:14,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:14,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:14,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 18:25:14,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:25:14,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-14 18:25:14,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:14,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:14,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:25:14,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 18:25:14,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 18:25:14,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:14,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:25:14,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:14,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:14,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:14,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:25:14,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:14,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:25:14,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:14,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:14,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:25:14,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:14,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:25:14,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:14,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 18:25:14,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:14,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:14,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:14,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:14,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:14,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:25:14,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:14,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:14,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:25:14,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:25:14,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:25:14,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:14,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 18:25:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:14,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:14,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:14,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:14,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:14,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:25:14,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:14,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:14,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:25:14,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:25:14,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:25:14,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:14,480 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-14 18:25:14,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [887640516] [2020-10-14 18:25:14,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:25:14,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 18:25:14,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986824001] [2020-10-14 18:25:14,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 18:25:14,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:25:14,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 18:25:14,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:25:14,483 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 6 states. [2020-10-14 18:25:14,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:25:14,566 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2020-10-14 18:25:14,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 18:25:14,568 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-14 18:25:14,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:25:14,569 INFO L225 Difference]: With dead ends: 92 [2020-10-14 18:25:14,569 INFO L226 Difference]: Without dead ends: 55 [2020-10-14 18:25:14,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:25:14,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-14 18:25:14,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2020-10-14 18:25:14,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-14 18:25:14,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-10-14 18:25:14,581 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 44 [2020-10-14 18:25:14,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:25:14,582 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-10-14 18:25:14,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 18:25:14,582 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-10-14 18:25:14,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 18:25:14,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:25:14,584 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:25:14,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 18:25:14,584 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:25:14,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:25:14,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1265173654, now seen corresponding path program 2 times [2020-10-14 18:25:14,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:25:14,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255309841] [2020-10-14 18:25:14,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:25:14,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:14,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:14,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:14,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:14,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:14,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:16,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:16,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 18:25:16,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:25:16,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1999 [2020-10-14 18:25:16,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:16,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:16,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 18:25:16,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 18:25:16,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 18:25:16,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:16,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:25:16,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:16,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:16,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:16,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:25:16,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:16,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:25:16,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:16,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:16,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:25:16,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:16,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:25:16,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:16,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 18:25:16,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:16,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:16,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:16,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:16,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:16,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:25:16,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:16,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:16,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:16,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:16,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:16,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:16,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 18:25:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:16,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:16,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:16,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:16,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:16,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:25:16,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:16,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:16,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:16,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:16,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:16,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:16,727 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 18:25:16,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255309841] [2020-10-14 18:25:16,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:25:16,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 18:25:16,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550028255] [2020-10-14 18:25:16,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:25:16,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:25:16,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:25:16,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:25:16,730 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 10 states. [2020-10-14 18:25:17,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:25:17,008 INFO L93 Difference]: Finished difference Result 90 states and 103 transitions. [2020-10-14 18:25:17,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 18:25:17,008 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 49 [2020-10-14 18:25:17,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:25:17,009 INFO L225 Difference]: With dead ends: 90 [2020-10-14 18:25:17,010 INFO L226 Difference]: Without dead ends: 79 [2020-10-14 18:25:17,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:25:17,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-14 18:25:17,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 69. [2020-10-14 18:25:17,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-14 18:25:17,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2020-10-14 18:25:17,023 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 49 [2020-10-14 18:25:17,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:25:17,023 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2020-10-14 18:25:17,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:25:17,024 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2020-10-14 18:25:17,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 18:25:17,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:25:17,026 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:25:17,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 18:25:17,026 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:25:17,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:25:17,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1774646744, now seen corresponding path program 5 times [2020-10-14 18:25:17,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:25:17,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307491610] [2020-10-14 18:25:17,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:25:17,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:17,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:17,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:17,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:19,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:19,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 18:25:19,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:25:19,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2169 [2020-10-14 18:25:19,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:19,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:19,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 18:25:19,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 18:25:19,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 18:25:19,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:19,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:25:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:19,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:19,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:19,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:25:19,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:19,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:25:19,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:19,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:19,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:25:19,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:19,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:25:19,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:19,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 18:25:19,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:19,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:19,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:19,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:19,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:19,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:25:19,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:19,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:19,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:19,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:19,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:19,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:19,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 18:25:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:19,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:19,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:19,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:19,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:19,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:25:19,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:19,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:19,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:19,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:19,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:19,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:19,491 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 18:25:19,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307491610] [2020-10-14 18:25:19,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:25:19,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 18:25:19,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077998556] [2020-10-14 18:25:19,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 18:25:19,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:25:19,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 18:25:19,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:25:19,496 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand 13 states. [2020-10-14 18:25:20,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:25:20,102 INFO L93 Difference]: Finished difference Result 102 states and 118 transitions. [2020-10-14 18:25:20,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 18:25:20,102 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2020-10-14 18:25:20,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:25:20,103 INFO L225 Difference]: With dead ends: 102 [2020-10-14 18:25:20,104 INFO L226 Difference]: Without dead ends: 100 [2020-10-14 18:25:20,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:25:20,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-14 18:25:20,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 90. [2020-10-14 18:25:20,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-14 18:25:20,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 104 transitions. [2020-10-14 18:25:20,117 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 104 transitions. Word has length 49 [2020-10-14 18:25:20,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:25:20,118 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 104 transitions. [2020-10-14 18:25:20,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 18:25:20,119 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 104 transitions. [2020-10-14 18:25:20,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 18:25:20,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:25:20,119 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:25:20,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 18:25:20,120 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:25:20,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:25:20,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1069028954, now seen corresponding path program 2 times [2020-10-14 18:25:20,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:25:20,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129951434] [2020-10-14 18:25:20,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:25:20,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:20,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:20,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:20,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:20,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:20,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:21,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:21,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:25,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:25,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 18:25:25,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 18:25:25,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 18:25:25,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:25,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:25,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 18:25:25,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:25:25,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 18:25:25,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:25,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:25:25,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:25,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:25,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:25,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:25:25,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:25,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:25:25,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:25,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:25,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:25:25,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:25,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:25:25,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:25,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 18:25:25,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:25,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:25,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:25,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:25,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:25,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:25:25,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:25,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:25,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:25,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:25,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:25,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:25,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 18:25:25,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:25,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:25,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:25,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:25,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:25,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:25:25,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:25,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:25,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:25,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:25,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:25,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:25,252 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 14 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-14 18:25:25,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129951434] [2020-10-14 18:25:25,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:25:25,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 18:25:25,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470215112] [2020-10-14 18:25:25,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 18:25:25,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:25:25,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 18:25:25,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 18:25:25,254 INFO L87 Difference]: Start difference. First operand 90 states and 104 transitions. Second operand 7 states. [2020-10-14 18:25:25,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:25:25,359 INFO L93 Difference]: Finished difference Result 106 states and 122 transitions. [2020-10-14 18:25:25,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 18:25:25,360 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-14 18:25:25,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:25:25,361 INFO L225 Difference]: With dead ends: 106 [2020-10-14 18:25:25,361 INFO L226 Difference]: Without dead ends: 79 [2020-10-14 18:25:25,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 18:25:25,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-14 18:25:25,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2020-10-14 18:25:25,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-14 18:25:25,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2020-10-14 18:25:25,376 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 52 [2020-10-14 18:25:25,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:25:25,376 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2020-10-14 18:25:25,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 18:25:25,377 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2020-10-14 18:25:25,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 18:25:25,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:25:25,377 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:25:25,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 18:25:25,378 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:25:25,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:25:25,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1708293741, now seen corresponding path program 6 times [2020-10-14 18:25:25,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:25:25,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021912259] [2020-10-14 18:25:25,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:25:25,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:25,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:25,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:25,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:27,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:27,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 18:25:27,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:25:27,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2118 [2020-10-14 18:25:27,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:27,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:27,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 18:25:27,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:25:27,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 18:25:27,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:27,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:25:27,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:27,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:27,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:27,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:25:27,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:27,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:25:27,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:27,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:27,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:25:27,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:27,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:25:27,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:27,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 18:25:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:27,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:27,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:27,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:27,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:27,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:25:27,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:27,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:27,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:27,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:27,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:27,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:27,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 18:25:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:27,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:27,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:27,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:27,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:27,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:25:27,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:27,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:27,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:27,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:27,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:27,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:27,857 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 18:25:27,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021912259] [2020-10-14 18:25:27,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:25:27,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 18:25:27,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691953280] [2020-10-14 18:25:27,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 18:25:27,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:25:27,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 18:25:27,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:25:27,859 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand 14 states. [2020-10-14 18:25:28,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:25:28,422 INFO L93 Difference]: Finished difference Result 92 states and 100 transitions. [2020-10-14 18:25:28,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 18:25:28,424 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 52 [2020-10-14 18:25:28,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:25:28,425 INFO L225 Difference]: With dead ends: 92 [2020-10-14 18:25:28,425 INFO L226 Difference]: Without dead ends: 90 [2020-10-14 18:25:28,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:25:28,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-14 18:25:28,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 65. [2020-10-14 18:25:28,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 18:25:28,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-14 18:25:28,433 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 52 [2020-10-14 18:25:28,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:25:28,433 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-14 18:25:28,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 18:25:28,434 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-14 18:25:28,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 18:25:28,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:25:28,434 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:25:28,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 18:25:28,435 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:25:28,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:25:28,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1129825455, now seen corresponding path program 7 times [2020-10-14 18:25:28,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:25:28,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006750997] [2020-10-14 18:25:28,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:25:28,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:28,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:28,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:28,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:28,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 18:25:28,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:25:28,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 457 [2020-10-14 18:25:28,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:28,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:28,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 18:25:28,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 18:25:28,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 18:25:28,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:28,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:25:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:28,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:28,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:28,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:25:28,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:28,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:25:28,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:28,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:28,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:25:28,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:28,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:25:28,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:28,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 18:25:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:28,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:28,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:28,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:28,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:28,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:25:28,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:28,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:28,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:25:28,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:25:28,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:25:28,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:28,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 18:25:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:28,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:28,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:28,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:28,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:28,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:25:28,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:28,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:28,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:25:28,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:25:28,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:25:28,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:28,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 18:25:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:28,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:28,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:28,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:28,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:28,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:25:28,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:28,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:28,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:25:28,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:25:28,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:25:28,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:28,967 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-14 18:25:28,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006750997] [2020-10-14 18:25:28,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:25:28,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 18:25:28,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632333591] [2020-10-14 18:25:28,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 18:25:28,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:25:28,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 18:25:28,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 18:25:28,969 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 7 states. [2020-10-14 18:25:29,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:25:29,122 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-10-14 18:25:29,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 18:25:29,123 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2020-10-14 18:25:29,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:25:29,124 INFO L225 Difference]: With dead ends: 124 [2020-10-14 18:25:29,124 INFO L226 Difference]: Without dead ends: 72 [2020-10-14 18:25:29,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 18:25:29,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-14 18:25:29,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2020-10-14 18:25:29,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-14 18:25:29,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-14 18:25:29,141 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 58 [2020-10-14 18:25:29,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:25:29,141 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-14 18:25:29,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 18:25:29,141 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-14 18:25:29,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 18:25:29,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:25:29,145 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:25:29,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 18:25:29,145 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:25:29,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:25:29,145 INFO L82 PathProgramCache]: Analyzing trace with hash -713076262, now seen corresponding path program 3 times [2020-10-14 18:25:29,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:25:29,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [73829297] [2020-10-14 18:25:29,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:25:29,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:29,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:29,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:29,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:29,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:30,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:30,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:30,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 18:25:30,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:25:30,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1704 [2020-10-14 18:25:30,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:30,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:30,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 18:25:30,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:25:30,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 18:25:30,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:31,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:25:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:31,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:31,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:31,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:25:31,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:31,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:25:31,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:31,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:31,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:25:31,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:31,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:25:31,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:31,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:25:31,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:31,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:31,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:31,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:31,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:31,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:25:31,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:31,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:31,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:31,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:31,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:31,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:31,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:25:31,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:31,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:31,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:31,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:31,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:31,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:25:31,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:31,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:31,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:31,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:31,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:31,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:31,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:25:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:31,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:31,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:31,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:31,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:31,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:25:31,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:31,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:31,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:31,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:31,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:31,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:31,051 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 9 proven. 43 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-14 18:25:31,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [73829297] [2020-10-14 18:25:31,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:25:31,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 18:25:31,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246647230] [2020-10-14 18:25:31,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 18:25:31,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:25:31,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 18:25:31,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:25:31,054 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 12 states. [2020-10-14 18:25:31,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:25:31,572 INFO L93 Difference]: Finished difference Result 116 states and 130 transitions. [2020-10-14 18:25:31,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 18:25:31,573 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-10-14 18:25:31,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:25:31,574 INFO L225 Difference]: With dead ends: 116 [2020-10-14 18:25:31,574 INFO L226 Difference]: Without dead ends: 102 [2020-10-14 18:25:31,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-10-14 18:25:31,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-14 18:25:31,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 91. [2020-10-14 18:25:31,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-14 18:25:31,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 101 transitions. [2020-10-14 18:25:31,586 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 101 transitions. Word has length 63 [2020-10-14 18:25:31,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:25:31,586 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 101 transitions. [2020-10-14 18:25:31,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 18:25:31,586 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 101 transitions. [2020-10-14 18:25:31,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 18:25:31,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:25:31,587 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:25:31,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 18:25:31,588 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:25:31,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:25:31,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1372607784, now seen corresponding path program 8 times [2020-10-14 18:25:31,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:25:31,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719409102] [2020-10-14 18:25:31,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:25:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:31,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:31,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:31,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:33,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:33,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 18:25:33,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:25:33,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1531 [2020-10-14 18:25:33,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:33,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:33,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 18:25:33,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:25:33,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 18:25:33,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:33,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:25:33,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:33,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:33,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:33,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:25:33,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:33,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:25:33,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:33,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:33,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:25:33,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:33,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:25:33,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:33,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:25:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:33,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:33,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:33,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:33,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:33,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:25:33,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:33,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:33,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:33,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:33,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:33,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:33,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:25:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:33,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:33,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:33,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:33,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:33,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:25:33,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:33,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:33,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:33,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:33,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:33,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:33,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:25:33,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:33,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:33,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:33,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:33,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:33,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:25:33,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:33,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:33,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:33,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:33,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:33,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:33,400 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 6 proven. 46 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-14 18:25:33,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719409102] [2020-10-14 18:25:33,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:25:33,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 18:25:33,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435960228] [2020-10-14 18:25:33,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 18:25:33,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:25:33,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 18:25:33,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-14 18:25:33,402 INFO L87 Difference]: Start difference. First operand 91 states and 101 transitions. Second operand 15 states. [2020-10-14 18:25:34,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:25:34,157 INFO L93 Difference]: Finished difference Result 133 states and 151 transitions. [2020-10-14 18:25:34,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 18:25:34,159 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 63 [2020-10-14 18:25:34,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:25:34,161 INFO L225 Difference]: With dead ends: 133 [2020-10-14 18:25:34,161 INFO L226 Difference]: Without dead ends: 131 [2020-10-14 18:25:34,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2020-10-14 18:25:34,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-14 18:25:34,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 117. [2020-10-14 18:25:34,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-14 18:25:34,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 133 transitions. [2020-10-14 18:25:34,183 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 133 transitions. Word has length 63 [2020-10-14 18:25:34,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:25:34,183 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 133 transitions. [2020-10-14 18:25:34,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 18:25:34,184 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 133 transitions. [2020-10-14 18:25:34,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 18:25:34,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:25:34,187 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:25:34,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 18:25:34,188 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:25:34,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:25:34,188 INFO L82 PathProgramCache]: Analyzing trace with hash 428959202, now seen corresponding path program 3 times [2020-10-14 18:25:34,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:25:34,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010168152] [2020-10-14 18:25:34,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:25:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:34,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:34,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:34,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:34,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:34,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:37,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:38,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:39,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:39,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 18:25:39,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 18:25:39,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 18:25:39,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:39,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:39,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 18:25:39,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:25:39,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 18:25:39,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:39,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:25:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:39,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:39,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:39,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:25:39,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:39,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:25:39,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:39,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:39,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:25:39,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:39,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:25:39,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:39,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:25:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:39,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:39,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:39,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:39,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:39,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 18:25:39,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:39,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:39,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:39,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:39,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:39,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:39,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:25:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:39,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:39,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:39,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:39,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:39,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 18:25:39,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:39,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:39,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:39,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:39,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:39,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:39,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:25:39,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:39,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:39,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:39,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:39,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:39,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:25:39,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:39,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:39,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:39,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:39,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:39,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:39,358 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 20 proven. 21 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-14 18:25:39,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010168152] [2020-10-14 18:25:39,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:25:39,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 18:25:39,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732486027] [2020-10-14 18:25:39,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 18:25:39,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:25:39,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 18:25:39,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-14 18:25:39,362 INFO L87 Difference]: Start difference. First operand 117 states and 133 transitions. Second operand 8 states. [2020-10-14 18:25:39,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:25:39,556 INFO L93 Difference]: Finished difference Result 135 states and 153 transitions. [2020-10-14 18:25:39,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 18:25:39,557 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-10-14 18:25:39,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:25:39,563 INFO L225 Difference]: With dead ends: 135 [2020-10-14 18:25:39,564 INFO L226 Difference]: Without dead ends: 100 [2020-10-14 18:25:39,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:25:39,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-14 18:25:39,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 97. [2020-10-14 18:25:39,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 18:25:39,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 106 transitions. [2020-10-14 18:25:39,589 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 106 transitions. Word has length 66 [2020-10-14 18:25:39,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:25:39,590 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 106 transitions. [2020-10-14 18:25:39,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 18:25:39,590 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 106 transitions. [2020-10-14 18:25:39,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 18:25:39,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:25:39,592 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:25:39,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 18:25:39,592 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:25:39,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:25:39,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1357713649, now seen corresponding path program 9 times [2020-10-14 18:25:39,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:25:39,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379005558] [2020-10-14 18:25:39,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:25:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:39,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:39,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:40,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:42,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:42,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 18:25:42,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:25:42,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3346 [2020-10-14 18:25:42,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:42,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:42,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 18:25:42,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:25:42,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 18:25:42,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:43,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:25:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:43,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:43,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:43,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:25:43,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:43,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:25:43,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:43,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:43,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:25:43,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:43,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:25:43,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:43,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 18:25:43,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:43,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:43,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:43,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:43,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:43,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:25:43,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:43,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:43,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:43,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:43,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:43,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:43,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 18:25:43,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:43,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:43,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:43,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:43,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:43,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:25:43,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:43,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:43,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:43,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:43,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:43,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:43,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 18:25:43,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:43,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:43,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:43,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:43,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:43,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:25:43,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:43,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:43,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:43,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:43,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:43,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:43,676 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 57 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-14 18:25:43,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379005558] [2020-10-14 18:25:43,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:25:43,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 18:25:43,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545922938] [2020-10-14 18:25:43,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 18:25:43,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:25:43,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 18:25:43,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:25:43,678 INFO L87 Difference]: Start difference. First operand 97 states and 106 transitions. Second operand 16 states. [2020-10-14 18:25:44,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:25:44,437 INFO L93 Difference]: Finished difference Result 111 states and 120 transitions. [2020-10-14 18:25:44,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 18:25:44,441 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 66 [2020-10-14 18:25:44,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:25:44,442 INFO L225 Difference]: With dead ends: 111 [2020-10-14 18:25:44,442 INFO L226 Difference]: Without dead ends: 109 [2020-10-14 18:25:44,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2020-10-14 18:25:44,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-14 18:25:44,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 79. [2020-10-14 18:25:44,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-14 18:25:44,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-14 18:25:44,454 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 66 [2020-10-14 18:25:44,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:25:44,455 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-14 18:25:44,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 18:25:44,455 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-14 18:25:44,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 18:25:44,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:25:44,456 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:25:44,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 18:25:44,456 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:25:44,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:25:44,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1625993135, now seen corresponding path program 10 times [2020-10-14 18:25:44,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:25:44,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066958151] [2020-10-14 18:25:44,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:25:44,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:44,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:44,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:45,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:45,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 18:25:45,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:25:45,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 612 [2020-10-14 18:25:45,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:45,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:45,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 18:25:45,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:25:45,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 18:25:45,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:45,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:25:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:45,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:45,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:45,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:25:45,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:45,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:25:45,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:45,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:45,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:25:45,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:45,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:25:45,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:45,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:25:45,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:45,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:45,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:45,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:45,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:45,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:25:45,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:45,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:45,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:25:45,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:25:45,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:25:45,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:45,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:25:45,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:45,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:45,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:45,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:45,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:45,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:25:45,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:45,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:45,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:25:45,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:25:45,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:25:45,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:45,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:25:45,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:45,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:45,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:45,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:45,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:45,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:25:45,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:45,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:45,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:25:45,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:25:45,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:25:45,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:45,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:25:45,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:45,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:45,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:45,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:45,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:45,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:25:45,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:45,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:45,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:25:45,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:25:45,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:25:45,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:45,152 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-14 18:25:45,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066958151] [2020-10-14 18:25:45,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:25:45,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 18:25:45,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956422695] [2020-10-14 18:25:45,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 18:25:45,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:25:45,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 18:25:45,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 18:25:45,164 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 8 states. [2020-10-14 18:25:45,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:25:45,310 INFO L93 Difference]: Finished difference Result 150 states and 160 transitions. [2020-10-14 18:25:45,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 18:25:45,312 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 72 [2020-10-14 18:25:45,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:25:45,313 INFO L225 Difference]: With dead ends: 150 [2020-10-14 18:25:45,313 INFO L226 Difference]: Without dead ends: 86 [2020-10-14 18:25:45,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 18:25:45,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-14 18:25:45,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 83. [2020-10-14 18:25:45,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-14 18:25:45,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-14 18:25:45,333 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 72 [2020-10-14 18:25:45,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:25:45,334 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-14 18:25:45,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 18:25:45,334 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-14 18:25:45,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-14 18:25:45,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:25:45,335 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:25:45,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 18:25:45,336 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:25:45,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:25:45,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1748436078, now seen corresponding path program 4 times [2020-10-14 18:25:45,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:25:45,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980544649] [2020-10-14 18:25:45,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:25:45,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:45,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:45,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:45,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:45,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:46,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:48,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:48,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 18:25:48,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:25:48,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3300 [2020-10-14 18:25:48,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:48,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:48,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 18:25:48,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 18:25:48,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 18:25:48,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:48,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:25:48,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:48,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:48,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:48,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:25:48,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:48,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:25:48,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:48,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:48,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:25:48,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:48,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:25:48,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:48,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 18:25:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:48,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:48,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:48,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:48,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:48,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:25:48,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:48,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:48,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:48,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:48,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:48,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:48,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:25:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:48,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:48,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:48,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:48,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:48,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:25:48,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:48,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:48,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:48,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:48,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:48,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:48,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 18:25:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:48,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:48,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:48,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:48,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:48,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:25:48,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:48,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:48,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:48,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:48,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:48,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:48,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 18:25:48,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:48,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:48,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:48,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:48,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:48,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:25:48,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:48,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:48,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:48,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:48,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:48,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:48,916 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 12 proven. 73 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-14 18:25:48,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980544649] [2020-10-14 18:25:48,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:25:48,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 18:25:48,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967570098] [2020-10-14 18:25:48,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 18:25:48,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:25:48,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 18:25:48,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:25:48,918 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 14 states. [2020-10-14 18:25:49,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:25:49,543 INFO L93 Difference]: Finished difference Result 135 states and 150 transitions. [2020-10-14 18:25:49,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 18:25:49,544 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 77 [2020-10-14 18:25:49,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:25:49,545 INFO L225 Difference]: With dead ends: 135 [2020-10-14 18:25:49,546 INFO L226 Difference]: Without dead ends: 121 [2020-10-14 18:25:49,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:25:49,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-14 18:25:49,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 110. [2020-10-14 18:25:49,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-14 18:25:49,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2020-10-14 18:25:49,571 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 77 [2020-10-14 18:25:49,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:25:49,571 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2020-10-14 18:25:49,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 18:25:49,572 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2020-10-14 18:25:49,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-14 18:25:49,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:25:49,573 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:25:49,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 18:25:49,574 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:25:49,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:25:49,574 INFO L82 PathProgramCache]: Analyzing trace with hash 618258516, now seen corresponding path program 11 times [2020-10-14 18:25:49,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:25:49,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31059522] [2020-10-14 18:25:49,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:25:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:49,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:49,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:50,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:52,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:52,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 18:25:52,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:25:52,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3373 [2020-10-14 18:25:52,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:52,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:52,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 18:25:52,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 18:25:52,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 18:25:52,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:53,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:25:53,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:53,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:53,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:53,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:25:53,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:53,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:25:53,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:53,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:53,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:25:53,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:53,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:25:53,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:53,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 18:25:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:53,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:53,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:53,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:53,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:53,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:25:53,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:53,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:53,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:53,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:53,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:53,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:53,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:25:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:53,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:53,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:53,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:53,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:53,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:25:53,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:53,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:53,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:53,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:53,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:53,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:53,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 18:25:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:53,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:53,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:53,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:53,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:53,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:25:53,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:53,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:53,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:53,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:53,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:53,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:53,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 18:25:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:53,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:53,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:53,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:53,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:53,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:25:53,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:53,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:53,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:53,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:53,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:53,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:53,398 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 8 proven. 77 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-14 18:25:53,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31059522] [2020-10-14 18:25:53,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:25:53,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 18:25:53,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182414781] [2020-10-14 18:25:53,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 18:25:53,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:25:53,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 18:25:53,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-14 18:25:53,400 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand 17 states. [2020-10-14 18:25:54,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:25:54,430 INFO L93 Difference]: Finished difference Result 157 states and 177 transitions. [2020-10-14 18:25:54,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 18:25:54,430 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 77 [2020-10-14 18:25:54,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:25:54,432 INFO L225 Difference]: With dead ends: 157 [2020-10-14 18:25:54,433 INFO L226 Difference]: Without dead ends: 155 [2020-10-14 18:25:54,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2020-10-14 18:25:54,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-14 18:25:54,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 141. [2020-10-14 18:25:54,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-14 18:25:54,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 159 transitions. [2020-10-14 18:25:54,454 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 159 transitions. Word has length 77 [2020-10-14 18:25:54,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:25:54,454 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 159 transitions. [2020-10-14 18:25:54,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 18:25:54,455 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 159 transitions. [2020-10-14 18:25:54,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 18:25:54,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:25:54,456 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:25:54,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 18:25:54,457 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:25:54,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:25:54,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1815166678, now seen corresponding path program 4 times [2020-10-14 18:25:54,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:25:54,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490150259] [2020-10-14 18:25:54,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:25:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:54,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:54,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:54,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:54,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:54,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:56,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:59,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:59,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 18:25:59,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 18:25:59,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 18:25:59,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:59,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:59,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 18:25:59,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:25:59,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 18:25:59,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:59,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:25:59,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:59,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:59,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:59,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:25:59,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:59,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:25:59,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:59,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:59,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:25:59,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:59,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:25:59,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:59,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 18:25:59,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:59,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:59,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:59,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:59,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:59,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:25:59,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:59,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:59,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:59,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:59,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:59,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:59,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:25:59,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:59,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:59,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:59,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:59,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:59,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:25:59,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:59,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:59,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:59,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:59,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:59,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:59,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 18:25:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:59,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:59,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:59,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:59,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:59,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:25:59,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:59,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:59,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:59,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:59,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:59,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:59,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 18:25:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:59,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:59,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:59,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:59,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:59,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:25:59,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:59,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:59,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:59,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:59,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:59,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:25:59,616 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 26 proven. 38 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-14 18:25:59,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490150259] [2020-10-14 18:25:59,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:25:59,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 18:25:59,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987880986] [2020-10-14 18:25:59,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 18:25:59,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:25:59,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 18:25:59,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-14 18:25:59,618 INFO L87 Difference]: Start difference. First operand 141 states and 159 transitions. Second operand 9 states. [2020-10-14 18:25:59,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:25:59,785 INFO L93 Difference]: Finished difference Result 159 states and 179 transitions. [2020-10-14 18:25:59,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 18:25:59,789 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 80 [2020-10-14 18:25:59,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:25:59,790 INFO L225 Difference]: With dead ends: 159 [2020-10-14 18:25:59,791 INFO L226 Difference]: Without dead ends: 119 [2020-10-14 18:25:59,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2020-10-14 18:25:59,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-14 18:25:59,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 116. [2020-10-14 18:25:59,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-14 18:25:59,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2020-10-14 18:25:59,819 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 80 [2020-10-14 18:25:59,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:25:59,822 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2020-10-14 18:25:59,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 18:25:59,823 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2020-10-14 18:25:59,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 18:25:59,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:25:59,824 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:25:59,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 18:25:59,824 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:25:59,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:25:59,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1193679119, now seen corresponding path program 12 times [2020-10-14 18:25:59,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:25:59,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851301818] [2020-10-14 18:25:59,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:25:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:59,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:59,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:00,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:04,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:04,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 18:26:04,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:26:04,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4612 [2020-10-14 18:26:04,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:04,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:04,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 18:26:04,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:26:04,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 18:26:04,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:04,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:26:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:04,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:04,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:04,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:26:04,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:04,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:04,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:04,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:04,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:04,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:04,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:04,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:04,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 18:26:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:04,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:04,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:04,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:04,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:04,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:04,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:04,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:04,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:04,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:04,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:04,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:04,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 18:26:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:04,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:04,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:04,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:04,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:04,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:04,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:04,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:04,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:04,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:04,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:04,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:04,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:26:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:04,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:04,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:04,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:04,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:04,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:26:04,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:04,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:04,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:04,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:04,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:04,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:04,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 18:26:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:04,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:04,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:04,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:04,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:04,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:26:04,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:04,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:04,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:04,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:04,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:04,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:05,024 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 8 proven. 91 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-14 18:26:05,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851301818] [2020-10-14 18:26:05,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:26:05,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 18:26:05,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482840693] [2020-10-14 18:26:05,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 18:26:05,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:26:05,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 18:26:05,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2020-10-14 18:26:05,026 INFO L87 Difference]: Start difference. First operand 116 states and 126 transitions. Second operand 18 states. [2020-10-14 18:26:05,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:26:05,918 INFO L93 Difference]: Finished difference Result 130 states and 140 transitions. [2020-10-14 18:26:05,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 18:26:05,920 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 80 [2020-10-14 18:26:05,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:26:05,924 INFO L225 Difference]: With dead ends: 130 [2020-10-14 18:26:05,924 INFO L226 Difference]: Without dead ends: 128 [2020-10-14 18:26:05,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2020-10-14 18:26:05,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-14 18:26:05,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 93. [2020-10-14 18:26:05,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-14 18:26:05,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-14 18:26:05,948 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 80 [2020-10-14 18:26:05,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:26:05,949 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-14 18:26:05,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 18:26:05,949 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-14 18:26:05,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 18:26:05,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:26:05,950 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:26:05,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 18:26:05,951 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:26:05,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:26:05,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1367270835, now seen corresponding path program 13 times [2020-10-14 18:26:05,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:26:05,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807333656] [2020-10-14 18:26:05,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:26:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:05,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:05,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:07,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:07,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 18:26:07,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:26:07,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1895 [2020-10-14 18:26:07,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:07,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:07,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 18:26:07,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 18:26:07,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 18:26:07,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:07,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:26:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:07,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:07,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:07,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:26:07,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:07,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:07,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:07,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:07,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:07,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:07,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:07,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:07,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 18:26:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:07,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:07,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:07,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:07,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:07,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:07,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:07,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:07,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:07,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:26:07,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:07,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:07,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 18:26:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:07,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:07,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:07,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:07,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:07,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:26:07,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:07,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:07,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:07,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:26:07,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:07,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:07,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 18:26:07,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:07,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:07,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:07,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:07,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:07,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:26:07,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:07,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:07,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:07,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:26:07,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:07,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:07,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 18:26:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:07,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:07,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:07,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:07,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:07,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:07,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:07,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:07,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:07,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:26:07,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:07,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:07,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 18:26:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:07,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:07,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:07,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:07,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:07,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:26:07,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:07,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:07,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:07,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:26:07,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:07,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:07,939 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 10 proven. 35 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-14 18:26:07,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807333656] [2020-10-14 18:26:07,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:26:07,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 18:26:07,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038344466] [2020-10-14 18:26:07,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 18:26:07,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:26:07,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 18:26:07,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 18:26:07,940 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 9 states. [2020-10-14 18:26:08,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:26:08,059 INFO L93 Difference]: Finished difference Result 176 states and 186 transitions. [2020-10-14 18:26:08,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 18:26:08,059 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2020-10-14 18:26:08,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:26:08,061 INFO L225 Difference]: With dead ends: 176 [2020-10-14 18:26:08,061 INFO L226 Difference]: Without dead ends: 100 [2020-10-14 18:26:08,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 18:26:08,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-14 18:26:08,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 97. [2020-10-14 18:26:08,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 18:26:08,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-14 18:26:08,072 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 86 [2020-10-14 18:26:08,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:26:08,072 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-14 18:26:08,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 18:26:08,072 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-14 18:26:08,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 18:26:08,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:26:08,073 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:26:08,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 18:26:08,074 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:26:08,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:26:08,074 INFO L82 PathProgramCache]: Analyzing trace with hash 170428502, now seen corresponding path program 5 times [2020-10-14 18:26:08,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:26:08,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201534350] [2020-10-14 18:26:08,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:26:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:08,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:08,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:08,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:08,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:11,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:13,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:13,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 18:26:13,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:26:13,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 18:26:13,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:13,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:13,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 18:26:13,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 18:26:13,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 18:26:13,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:13,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:26:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:13,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:13,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:13,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:26:13,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:13,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:13,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:13,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:13,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:13,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:13,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:13,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:13,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:26:13,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:13,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:13,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:13,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:13,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:13,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:13,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:13,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:13,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:13,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:13,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:13,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:13,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 18:26:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:13,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:13,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:13,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:13,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:13,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:13,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:13,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:13,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:13,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:13,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:13,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:13,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 18:26:13,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:13,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:13,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:13,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:13,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:13,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:26:13,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:13,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:13,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:13,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:13,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:13,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:13,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 18:26:13,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:13,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:13,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:13,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:13,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:13,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:26:13,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:13,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:13,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:13,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:13,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:13,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:13,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:26:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:13,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:13,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:13,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:13,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:13,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:13,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:13,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:13,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:13,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:13,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:13,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:13,318 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 15 proven. 111 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-14 18:26:13,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201534350] [2020-10-14 18:26:13,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:26:13,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 18:26:13,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792329956] [2020-10-14 18:26:13,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 18:26:13,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:26:13,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 18:26:13,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:26:13,321 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 16 states. [2020-10-14 18:26:14,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:26:14,078 INFO L93 Difference]: Finished difference Result 154 states and 170 transitions. [2020-10-14 18:26:14,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 18:26:14,080 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 91 [2020-10-14 18:26:14,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:26:14,081 INFO L225 Difference]: With dead ends: 154 [2020-10-14 18:26:14,081 INFO L226 Difference]: Without dead ends: 140 [2020-10-14 18:26:14,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2020-10-14 18:26:14,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-14 18:26:14,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 129. [2020-10-14 18:26:14,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-14 18:26:14,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 141 transitions. [2020-10-14 18:26:14,096 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 141 transitions. Word has length 91 [2020-10-14 18:26:14,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:26:14,097 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 141 transitions. [2020-10-14 18:26:14,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 18:26:14,097 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 141 transitions. [2020-10-14 18:26:14,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 18:26:14,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:26:14,098 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:26:14,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 18:26:14,099 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:26:14,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:26:14,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1216356908, now seen corresponding path program 14 times [2020-10-14 18:26:14,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:26:14,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440268472] [2020-10-14 18:26:14,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:26:14,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:14,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:14,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:15,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:19,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:19,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 18:26:19,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:26:19,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 18:26:19,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:19,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:19,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 18:26:19,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 18:26:19,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 18:26:19,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:19,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:26:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:19,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:19,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:19,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:26:19,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:19,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:19,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:19,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:19,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:19,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:19,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:19,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:19,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:26:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:19,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:19,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:19,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:19,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:19,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:19,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:19,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:19,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:19,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:19,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:19,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:19,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 18:26:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:19,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:19,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:19,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:19,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:19,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:19,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:19,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:19,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:19,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:19,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:19,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:19,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 18:26:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:19,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:19,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:19,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:19,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:19,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:19,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:19,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:19,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:19,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:19,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:19,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:19,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 18:26:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:19,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:19,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:19,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:19,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:19,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:19,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:19,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:19,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:19,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:19,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:19,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:19,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:26:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:19,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:19,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:19,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:19,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:19,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:19,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:19,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:19,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:19,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:19,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:19,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:19,554 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 10 proven. 116 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-14 18:26:19,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440268472] [2020-10-14 18:26:19,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:26:19,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 18:26:19,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798062797] [2020-10-14 18:26:19,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 18:26:19,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:26:19,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 18:26:19,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:26:19,556 INFO L87 Difference]: Start difference. First operand 129 states and 141 transitions. Second operand 19 states. [2020-10-14 18:26:20,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:26:20,754 INFO L93 Difference]: Finished difference Result 181 states and 203 transitions. [2020-10-14 18:26:20,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 18:26:20,755 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 91 [2020-10-14 18:26:20,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:26:20,756 INFO L225 Difference]: With dead ends: 181 [2020-10-14 18:26:20,756 INFO L226 Difference]: Without dead ends: 179 [2020-10-14 18:26:20,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=786, Unknown=0, NotChecked=0, Total=870 [2020-10-14 18:26:20,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-14 18:26:20,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 165. [2020-10-14 18:26:20,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-14 18:26:20,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 185 transitions. [2020-10-14 18:26:20,777 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 185 transitions. Word has length 91 [2020-10-14 18:26:20,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:26:20,778 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 185 transitions. [2020-10-14 18:26:20,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 18:26:20,778 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 185 transitions. [2020-10-14 18:26:20,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 18:26:20,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:26:20,780 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:26:20,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 18:26:20,781 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:26:20,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:26:20,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1359793638, now seen corresponding path program 5 times [2020-10-14 18:26:20,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:26:20,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649322969] [2020-10-14 18:26:20,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:26:20,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:20,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:20,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:20,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:20,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:24,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:24,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:25,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:25,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 18:26:25,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 18:26:25,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 18:26:25,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:25,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:25,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 18:26:25,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:26:25,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 18:26:25,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:25,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:26:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:25,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:25,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:25,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:26:25,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:25,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:25,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:25,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:25,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:25,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:25,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:25,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:25,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:26:25,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:25,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:25,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:25,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:25,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:25,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:25,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:25,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:25,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:25,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:25,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:25,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:25,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 18:26:25,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:25,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:25,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:25,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:25,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:25,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:25,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:25,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:25,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:25,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:25,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:25,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:25,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 18:26:25,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:25,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:25,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:25,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:25,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:25,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:26:25,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:25,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:25,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:25,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:25,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:25,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:25,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 18:26:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:25,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:25,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:25,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:25,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:25,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:26:25,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:25,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:25,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:25,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:25,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:25,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:25,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:26:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:25,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:25,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:25,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:25,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:25,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:25,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:25,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:25,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:25,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:25,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:25,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:25,900 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 32 proven. 60 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-10-14 18:26:25,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649322969] [2020-10-14 18:26:25,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:26:25,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 18:26:25,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183747466] [2020-10-14 18:26:25,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:26:25,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:26:25,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:26:25,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:26:25,902 INFO L87 Difference]: Start difference. First operand 165 states and 185 transitions. Second operand 10 states. [2020-10-14 18:26:26,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:26:26,098 INFO L93 Difference]: Finished difference Result 186 states and 209 transitions. [2020-10-14 18:26:26,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 18:26:26,099 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-10-14 18:26:26,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:26:26,100 INFO L225 Difference]: With dead ends: 186 [2020-10-14 18:26:26,100 INFO L226 Difference]: Without dead ends: 141 [2020-10-14 18:26:26,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:26:26,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-14 18:26:26,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 135. [2020-10-14 18:26:26,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-14 18:26:26,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 146 transitions. [2020-10-14 18:26:26,114 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 146 transitions. Word has length 94 [2020-10-14 18:26:26,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:26:26,115 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 146 transitions. [2020-10-14 18:26:26,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:26:26,115 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 146 transitions. [2020-10-14 18:26:26,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 18:26:26,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:26:26,116 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:26:26,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 18:26:26,116 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:26:26,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:26:26,117 INFO L82 PathProgramCache]: Analyzing trace with hash 301664245, now seen corresponding path program 15 times [2020-10-14 18:26:26,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:26:26,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160181907] [2020-10-14 18:26:26,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:26:26,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:26,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:26,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:27,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:31,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:31,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 18:26:31,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:26:31,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 18:26:31,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:31,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:31,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 18:26:31,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:26:31,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 18:26:31,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:31,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:26:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:31,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:31,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:31,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:26:31,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:31,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:31,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:31,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:31,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:31,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:31,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:31,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:31,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 18:26:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:31,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:31,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:31,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:31,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:31,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:26:31,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:31,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:31,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:31,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:31,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:31,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:31,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:26:31,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:31,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:31,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:31,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:31,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:31,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:26:31,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:31,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:31,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:31,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:31,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:31,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:31,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:26:31,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:31,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:31,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:31,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:31,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:31,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:26:31,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:31,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:31,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:31,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:31,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:31,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:31,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 18:26:31,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:31,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:31,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:31,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:31,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:31,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:26:31,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:31,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:31,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:31,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:31,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:31,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:31,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 18:26:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:31,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:31,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:31,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:31,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:31,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:26:31,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:31,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:31,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:31,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:31,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:31,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:31,832 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 10 proven. 133 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-14 18:26:31,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160181907] [2020-10-14 18:26:31,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:26:31,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 18:26:31,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665916121] [2020-10-14 18:26:31,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 18:26:31,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:26:31,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 18:26:31,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:26:31,834 INFO L87 Difference]: Start difference. First operand 135 states and 146 transitions. Second operand 20 states. [2020-10-14 18:26:32,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:26:32,876 INFO L93 Difference]: Finished difference Result 149 states and 160 transitions. [2020-10-14 18:26:32,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 18:26:32,876 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 94 [2020-10-14 18:26:32,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:26:32,877 INFO L225 Difference]: With dead ends: 149 [2020-10-14 18:26:32,878 INFO L226 Difference]: Without dead ends: 147 [2020-10-14 18:26:32,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=107, Invalid=823, Unknown=0, NotChecked=0, Total=930 [2020-10-14 18:26:32,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-14 18:26:32,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 107. [2020-10-14 18:26:32,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-14 18:26:32,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-10-14 18:26:32,889 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 94 [2020-10-14 18:26:32,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:26:32,890 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-10-14 18:26:32,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 18:26:32,890 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-10-14 18:26:32,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 18:26:32,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:26:32,890 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:26:32,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 18:26:32,891 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:26:32,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:26:32,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1577183181, now seen corresponding path program 16 times [2020-10-14 18:26:32,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:26:32,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477914704] [2020-10-14 18:26:32,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:26:32,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:32,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:32,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:34,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:34,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 18:26:34,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:26:34,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1866 [2020-10-14 18:26:34,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:34,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:34,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 18:26:34,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 18:26:34,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 18:26:34,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:34,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:26:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:34,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:34,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:34,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:26:34,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:34,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:34,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:34,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:34,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:34,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:34,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:34,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:34,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 18:26:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:34,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:34,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:34,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:34,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:34,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:26:34,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:34,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:34,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:34,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:26:34,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:34,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:34,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 18:26:34,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:34,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:34,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:34,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:34,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:34,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:26:34,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:34,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:34,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:34,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:26:34,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:34,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:34,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 18:26:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:34,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:34,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:34,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:34,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:34,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:26:34,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:34,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:34,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:34,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:26:34,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:34,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:34,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 18:26:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:34,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:34,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:34,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:34,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:34,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:26:34,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:34,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:34,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:34,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:26:34,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:34,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:34,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 18:26:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:34,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:34,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:34,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:34,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:34,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:26:34,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:34,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:34,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:34,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:26:34,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:34,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:34,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 18:26:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:34,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:34,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:34,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:34,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:34,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:26:34,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:34,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:34,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:34,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:26:34,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:34,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:34,849 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 12 proven. 51 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-10-14 18:26:34,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477914704] [2020-10-14 18:26:34,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:26:34,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 18:26:34,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892917523] [2020-10-14 18:26:34,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:26:34,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:26:34,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:26:34,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:26:34,850 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 10 states. [2020-10-14 18:26:34,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:26:34,991 INFO L93 Difference]: Finished difference Result 202 states and 212 transitions. [2020-10-14 18:26:34,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 18:26:34,992 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 100 [2020-10-14 18:26:34,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:26:34,993 INFO L225 Difference]: With dead ends: 202 [2020-10-14 18:26:34,993 INFO L226 Difference]: Without dead ends: 114 [2020-10-14 18:26:34,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:26:34,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-14 18:26:35,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 111. [2020-10-14 18:26:35,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-14 18:26:35,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2020-10-14 18:26:35,005 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 100 [2020-10-14 18:26:35,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:26:35,005 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2020-10-14 18:26:35,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:26:35,006 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2020-10-14 18:26:35,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 18:26:35,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:26:35,006 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:26:35,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 18:26:35,007 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:26:35,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:26:35,007 INFO L82 PathProgramCache]: Analyzing trace with hash -258630514, now seen corresponding path program 6 times [2020-10-14 18:26:35,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:26:35,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416184513] [2020-10-14 18:26:35,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:26:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:35,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:35,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:35,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:35,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:40,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:40,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 18:26:40,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 18:26:40,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 18:26:40,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:40,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:40,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:26:40,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:26:40,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 18:26:40,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:40,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:26:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:40,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:40,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:40,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:26:40,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:40,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:40,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:40,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:40,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:40,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:40,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:40,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:40,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 18:26:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:40,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:40,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:40,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:40,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:40,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:40,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:40,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:40,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:40,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:26:40,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:40,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:40,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 18:26:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:40,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:40,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:40,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:40,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:40,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:26:40,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:40,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:40,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:40,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:26:40,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:40,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:40,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 18:26:40,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:40,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:40,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:40,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:40,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:40,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:26:40,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:40,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:40,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:40,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:26:40,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:40,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:40,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:26:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:40,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:40,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:40,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:40,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:40,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:26:40,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:40,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:40,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:40,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:26:40,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:40,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:40,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 18:26:40,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:40,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:40,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:40,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:40,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:40,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:26:40,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:40,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:40,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:40,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:26:40,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:40,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:40,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 18:26:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:40,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:40,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:40,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:40,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:40,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:26:40,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:40,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:40,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:40,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:26:40,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:40,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:40,078 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2020-10-14 18:26:40,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416184513] [2020-10-14 18:26:40,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:26:40,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 18:26:40,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190958843] [2020-10-14 18:26:40,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 18:26:40,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:26:40,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 18:26:40,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:26:40,080 INFO L87 Difference]: Start difference. First operand 111 states and 115 transitions. Second operand 6 states. [2020-10-14 18:26:40,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:26:40,170 INFO L93 Difference]: Finished difference Result 182 states and 189 transitions. [2020-10-14 18:26:40,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 18:26:40,171 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2020-10-14 18:26:40,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:26:40,172 INFO L225 Difference]: With dead ends: 182 [2020-10-14 18:26:40,172 INFO L226 Difference]: Without dead ends: 115 [2020-10-14 18:26:40,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 18:26:40,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-14 18:26:40,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2020-10-14 18:26:40,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-14 18:26:40,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2020-10-14 18:26:40,181 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 105 [2020-10-14 18:26:40,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:26:40,182 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2020-10-14 18:26:40,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 18:26:40,182 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2020-10-14 18:26:40,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 18:26:40,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:26:40,183 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:26:40,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 18:26:40,183 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:26:40,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:26:40,183 INFO L82 PathProgramCache]: Analyzing trace with hash -204237616, now seen corresponding path program 17 times [2020-10-14 18:26:40,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:26:40,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658997662] [2020-10-14 18:26:40,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:26:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:40,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:40,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:41,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:45,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:45,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 18:26:45,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:26:45,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 18:26:45,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:45,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:45,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 18:26:45,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 18:26:45,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 18:26:45,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:45,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:26:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:45,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:45,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:45,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:26:45,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:45,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:45,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:45,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:45,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:45,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:45,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:45,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:45,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 18:26:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:45,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:45,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:45,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:45,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:45,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:45,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:45,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:45,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:45,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:45,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:45,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:45,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 18:26:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:45,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:45,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:45,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:45,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:45,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:26:45,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:45,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:45,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:45,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:45,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:45,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:45,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 18:26:45,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:45,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:45,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:45,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:45,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:45,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:26:45,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:45,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:45,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:45,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:45,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:45,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:45,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:26:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:45,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:45,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:45,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:45,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:45,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:26:45,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:45,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:45,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:45,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:45,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:45,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:45,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 18:26:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:45,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:45,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:45,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:45,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:45,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:45,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:45,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:45,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:45,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:45,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:45,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:45,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 18:26:45,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:45,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:45,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:45,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:45,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:45,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:26:45,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:45,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:45,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:45,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:45,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:45,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:45,716 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 12 proven. 163 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-14 18:26:45,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658997662] [2020-10-14 18:26:45,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:26:45,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 18:26:45,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009498999] [2020-10-14 18:26:45,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 18:26:45,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:26:45,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 18:26:45,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:26:45,718 INFO L87 Difference]: Start difference. First operand 111 states and 115 transitions. Second operand 21 states. [2020-10-14 18:26:47,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:26:47,124 INFO L93 Difference]: Finished difference Result 172 states and 188 transitions. [2020-10-14 18:26:47,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 18:26:47,125 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 105 [2020-10-14 18:26:47,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:26:47,126 INFO L225 Difference]: With dead ends: 172 [2020-10-14 18:26:47,126 INFO L226 Difference]: Without dead ends: 170 [2020-10-14 18:26:47,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=92, Invalid=964, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 18:26:47,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-14 18:26:47,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 154. [2020-10-14 18:26:47,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-14 18:26:47,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 167 transitions. [2020-10-14 18:26:47,146 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 167 transitions. Word has length 105 [2020-10-14 18:26:47,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:26:47,146 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 167 transitions. [2020-10-14 18:26:47,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 18:26:47,146 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 167 transitions. [2020-10-14 18:26:47,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 18:26:47,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:26:47,148 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:26:47,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 18:26:47,148 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:26:47,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:26:47,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1042095351, now seen corresponding path program 7 times [2020-10-14 18:26:47,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:26:47,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451439117] [2020-10-14 18:26:47,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:26:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:47,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:47,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:47,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:48,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:52,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:52,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 18:26:52,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 18:26:52,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 18:26:52,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:52,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:52,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 18:26:52,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:26:52,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 18:26:52,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:52,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:26:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:52,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:52,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:52,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:26:52,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:52,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:52,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:52,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:52,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:52,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:52,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:52,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:52,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:26:52,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:52,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:52,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:52,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:52,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:52,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:26:52,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:52,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:52,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:52,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:26:52,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:52,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:52,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:26:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:52,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:52,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:52,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:52,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:52,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:26:52,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:52,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:52,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:52,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:26:52,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:52,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:52,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 18:26:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:52,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:52,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:52,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:52,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:52,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:26:52,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:52,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:52,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:52,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:26:52,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:52,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:52,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 18:26:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:52,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:52,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:52,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:52,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:52,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:26:52,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:52,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:52,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:52,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:26:52,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:52,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:52,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:26:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:52,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:52,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:52,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:52,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:52,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:26:52,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:52,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:52,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:52,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:26:52,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:52,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:52,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 18:26:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:52,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:52,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:52,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:52,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:52,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:26:52,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:52,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:52,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:52,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:26:52,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:52,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:52,228 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 12 proven. 35 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2020-10-14 18:26:52,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451439117] [2020-10-14 18:26:52,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:26:52,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 18:26:52,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605159129] [2020-10-14 18:26:52,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 18:26:52,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:26:52,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 18:26:52,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 18:26:52,229 INFO L87 Difference]: Start difference. First operand 154 states and 167 transitions. Second operand 7 states. [2020-10-14 18:26:52,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:26:52,349 INFO L93 Difference]: Finished difference Result 226 states and 243 transitions. [2020-10-14 18:26:52,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 18:26:52,350 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-10-14 18:26:52,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:26:52,352 INFO L225 Difference]: With dead ends: 226 [2020-10-14 18:26:52,352 INFO L226 Difference]: Without dead ends: 159 [2020-10-14 18:26:52,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:26:52,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-14 18:26:52,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 157. [2020-10-14 18:26:52,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-14 18:26:52,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 171 transitions. [2020-10-14 18:26:52,369 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 171 transitions. Word has length 108 [2020-10-14 18:26:52,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:26:52,370 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 171 transitions. [2020-10-14 18:26:52,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 18:26:52,370 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 171 transitions. [2020-10-14 18:26:52,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 18:26:52,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:26:52,371 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:26:52,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 18:26:52,371 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:26:52,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:26:52,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1993492692, now seen corresponding path program 1 times [2020-10-14 18:26:52,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:26:52,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51618390] [2020-10-14 18:26:52,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:26:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:52,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:52,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:53,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:54,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:57,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:57,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 18:26:57,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 18:26:57,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 18:26:57,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:57,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:57,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 18:26:57,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:26:57,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 18:26:57,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:57,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:26:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:57,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:57,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:57,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:26:57,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:57,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:57,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:57,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:57,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:57,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:57,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:57,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:57,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 18:26:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:57,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:57,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:57,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:57,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:57,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:57,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:57,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:57,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:57,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:57,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:57,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:57,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 18:26:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:57,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:57,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:57,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:57,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:57,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:57,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:57,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:57,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:57,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:57,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:57,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:57,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 18:26:57,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:57,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:57,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:57,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:57,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:57,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:57,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:57,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:57,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:57,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:57,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:57,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:57,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:26:57,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:57,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:57,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:57,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:57,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:57,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:57,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:57,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:57,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:57,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:57,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:57,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:57,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 18:26:57,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:57,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:57,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:57,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:57,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:57,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:57,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:57,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:57,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:57,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:57,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:57,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:57,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 18:26:57,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:57,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:57,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:57,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:57,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:57,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:57,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:57,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:57,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:57,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:57,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:57,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:57,499 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 38 proven. 87 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2020-10-14 18:26:57,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51618390] [2020-10-14 18:26:57,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:26:57,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 18:26:57,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419454405] [2020-10-14 18:26:57,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 18:26:57,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:26:57,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 18:26:57,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-14 18:26:57,501 INFO L87 Difference]: Start difference. First operand 157 states and 171 transitions. Second operand 11 states. [2020-10-14 18:26:57,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:26:57,714 INFO L93 Difference]: Finished difference Result 178 states and 195 transitions. [2020-10-14 18:26:57,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 18:26:57,714 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-10-14 18:26:57,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:26:57,719 INFO L225 Difference]: With dead ends: 178 [2020-10-14 18:26:57,719 INFO L226 Difference]: Without dead ends: 164 [2020-10-14 18:26:57,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2020-10-14 18:26:57,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-14 18:26:57,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 158. [2020-10-14 18:26:57,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-14 18:26:57,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 171 transitions. [2020-10-14 18:26:57,746 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 171 transitions. Word has length 108 [2020-10-14 18:26:57,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:26:57,747 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 171 transitions. [2020-10-14 18:26:57,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 18:26:57,748 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 171 transitions. [2020-10-14 18:26:57,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 18:26:57,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:26:57,752 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:26:57,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 18:26:57,752 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:26:57,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:26:57,754 INFO L82 PathProgramCache]: Analyzing trace with hash -2036718219, now seen corresponding path program 18 times [2020-10-14 18:26:57,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:26:57,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265512218] [2020-10-14 18:26:57,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:26:57,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:57,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:57,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:00,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:02,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:02,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 18:27:02,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:27:02,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 18:27:02,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:02,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:02,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 18:27:02,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:27:02,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 18:27:02,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:03,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:27:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:03,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:03,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:03,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:27:03,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:03,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:03,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:03,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:03,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:03,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:03,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:03,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:03,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:27:03,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:03,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:03,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:03,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:03,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:03,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:27:03,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:03,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:03,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:03,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:03,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:03,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:03,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:27:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:03,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:03,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:03,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:03,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:03,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:03,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:03,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:03,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:03,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:03,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:03,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:03,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 18:27:03,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:03,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:03,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:03,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:03,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:03,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:27:03,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:03,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:03,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:03,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:03,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:03,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:03,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 18:27:03,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:03,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:03,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:03,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:03,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:03,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:03,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:03,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:03,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:03,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:03,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:03,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:03,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:27:03,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:03,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:03,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:03,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:03,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:03,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:27:03,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:03,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:03,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:03,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:03,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:03,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:03,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 18:27:03,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:03,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:03,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:03,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:03,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:03,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:03,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:03,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:03,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:03,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:03,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:03,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:03,715 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 12 proven. 183 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-14 18:27:03,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265512218] [2020-10-14 18:27:03,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:27:03,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 18:27:03,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354348704] [2020-10-14 18:27:03,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 18:27:03,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:27:03,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 18:27:03,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:27:03,718 INFO L87 Difference]: Start difference. First operand 158 states and 171 transitions. Second operand 22 states. [2020-10-14 18:27:05,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:27:05,222 INFO L93 Difference]: Finished difference Result 218 states and 242 transitions. [2020-10-14 18:27:05,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 18:27:05,223 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 108 [2020-10-14 18:27:05,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:27:05,225 INFO L225 Difference]: With dead ends: 218 [2020-10-14 18:27:05,225 INFO L226 Difference]: Without dead ends: 216 [2020-10-14 18:27:05,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=118, Invalid=1004, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 18:27:05,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-14 18:27:05,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 164. [2020-10-14 18:27:05,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-14 18:27:05,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 179 transitions. [2020-10-14 18:27:05,248 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 179 transitions. Word has length 108 [2020-10-14 18:27:05,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:27:05,249 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 179 transitions. [2020-10-14 18:27:05,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 18:27:05,249 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 179 transitions. [2020-10-14 18:27:05,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 18:27:05,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:27:05,250 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:27:05,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 18:27:05,250 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:27:05,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:27:05,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1771395054, now seen corresponding path program 8 times [2020-10-14 18:27:05,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:27:05,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829285252] [2020-10-14 18:27:05,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:27:05,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:05,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:05,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:05,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:07,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:10,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:10,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 18:27:10,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 18:27:10,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 18:27:10,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:10,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:10,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 18:27:10,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:27:10,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 18:27:10,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:10,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:27:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:10,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:10,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:10,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:27:10,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:10,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:10,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:10,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:10,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:10,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:10,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:10,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:10,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 18:27:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:10,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:10,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:10,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:10,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:10,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:27:10,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:10,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:10,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:10,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:10,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:10,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:10,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:27:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:10,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:10,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:10,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:10,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:10,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:27:10,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:10,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:10,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:10,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:10,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:10,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:10,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 18:27:10,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:10,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:10,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:10,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:10,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:10,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:27:10,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:10,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:10,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:10,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:10,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:10,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:10,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 18:27:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:10,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:10,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:10,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:10,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:10,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:27:10,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:10,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:10,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:10,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:10,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:10,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:10,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 18:27:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:10,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:10,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:10,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:10,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:10,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:10,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:10,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:10,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:10,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:10,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:10,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:27:10,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 18:27:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:10,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:10,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:10,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:10,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:10,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:10,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:10,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:10,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:10,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:10,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:10,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:27:10,354 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 12 proven. 60 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2020-10-14 18:27:10,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829285252] [2020-10-14 18:27:10,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:27:10,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 18:27:10,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264591709] [2020-10-14 18:27:10,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 18:27:10,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:27:10,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 18:27:10,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 18:27:10,356 INFO L87 Difference]: Start difference. First operand 164 states and 179 transitions. Second operand 8 states. [2020-10-14 18:27:10,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:27:10,514 INFO L93 Difference]: Finished difference Result 280 states and 308 transitions. [2020-10-14 18:27:10,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 18:27:10,515 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-10-14 18:27:10,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:27:10,516 INFO L225 Difference]: With dead ends: 280 [2020-10-14 18:27:10,516 INFO L226 Difference]: Without dead ends: 174 [2020-10-14 18:27:10,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:27:10,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-14 18:27:10,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 170. [2020-10-14 18:27:10,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-14 18:27:10,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 187 transitions. [2020-10-14 18:27:10,538 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 187 transitions. Word has length 111 [2020-10-14 18:27:10,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:27:10,538 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 187 transitions. [2020-10-14 18:27:10,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 18:27:10,538 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 187 transitions. [2020-10-14 18:27:10,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 18:27:10,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:27:10,539 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:27:10,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 18:27:10,540 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:27:10,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:27:10,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1103264951, now seen corresponding path program 19 times [2020-10-14 18:27:10,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:27:10,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844981321] [2020-10-14 18:27:10,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:27:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:10,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:10,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:13,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:13,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 18:27:13,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:27:13,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3373 [2020-10-14 18:27:13,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:13,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:13,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 18:27:13,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 18:27:13,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 18:27:13,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:27:14,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:27:14,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:14,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:14,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:14,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:27:14,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:14,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:14,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:14,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:14,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:14,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:14,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:14,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:27:14,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 18:27:14,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:14,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:14,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:14,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:14,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:14,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:14,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:14,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:14,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:14,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:14,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:14,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:27:14,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 18:27:14,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:14,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:14,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:14,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:14,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:14,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:14,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:14,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:14,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:14,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:14,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:14,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:14,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 18:27:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:14,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:14,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:14,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:14,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:14,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:14,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:14,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:14,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:14,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:14,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:14,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:27:14,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 18:27:14,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:14,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:14,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:14,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:14,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:14,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:14,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:14,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:14,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:14,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:14,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:14,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:27:14,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 18:27:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:14,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:14,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:14,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:14,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:14,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:27:14,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:14,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:14,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:14,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:14,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:14,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:27:14,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-14 18:27:14,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:14,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:14,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:14,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:14,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:14,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:14,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:14,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:14,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:14,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:14,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:14,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:27:14,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 18:27:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:14,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:14,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:14,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:14,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:14,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:14,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:14,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:14,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:14,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:14,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:14,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:14,091 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 14 proven. 70 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2020-10-14 18:27:14,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844981321] [2020-10-14 18:27:14,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:27:14,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 18:27:14,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818782804] [2020-10-14 18:27:14,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 18:27:14,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:27:14,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 18:27:14,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 18:27:14,094 INFO L87 Difference]: Start difference. First operand 170 states and 187 transitions. Second operand 11 states. [2020-10-14 18:27:14,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:27:14,285 INFO L93 Difference]: Finished difference Result 332 states and 369 transitions. [2020-10-14 18:27:14,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 18:27:14,286 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 114 [2020-10-14 18:27:14,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:27:14,288 INFO L225 Difference]: With dead ends: 332 [2020-10-14 18:27:14,288 INFO L226 Difference]: Without dead ends: 183 [2020-10-14 18:27:14,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 18:27:14,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-14 18:27:14,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 172. [2020-10-14 18:27:14,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-14 18:27:14,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 189 transitions. [2020-10-14 18:27:14,314 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 189 transitions. Word has length 114 [2020-10-14 18:27:14,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:27:14,314 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 189 transitions. [2020-10-14 18:27:14,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 18:27:14,315 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 189 transitions. [2020-10-14 18:27:14,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-14 18:27:14,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:27:14,318 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:27:14,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 18:27:14,319 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:27:14,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:27:14,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1778959673, now seen corresponding path program 9 times [2020-10-14 18:27:14,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:27:14,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403504700] [2020-10-14 18:27:14,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:27:14,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:14,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:14,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:14,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:16,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:19,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:19,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 18:27:19,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 18:27:19,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 18:27:19,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:19,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:19,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 18:27:19,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:27:19,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 18:27:19,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:19,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:27:19,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:19,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:19,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:19,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:27:19,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:19,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:19,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:19,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:19,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:19,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:19,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:19,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:19,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 18:27:19,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:19,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:19,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:19,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:19,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:19,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:19,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:19,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:19,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:19,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:19,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:19,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:19,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 18:27:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:19,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:19,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:19,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:19,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:19,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:19,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:19,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:19,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:19,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:19,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:19,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:19,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-14 18:27:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:19,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:19,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:19,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:19,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:19,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:27:19,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:19,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:19,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:19,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:19,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:19,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:19,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 18:27:19,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:19,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:19,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:19,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:19,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:19,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:27:19,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:19,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:19,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:19,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:19,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:19,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:27:19,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 18:27:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:19,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:19,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:19,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:19,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:19,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:19,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:19,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:19,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:19,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:19,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:19,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:19,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 18:27:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:19,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:19,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:19,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:19,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:19,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:19,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:19,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:19,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:19,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:19,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:19,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:19,447 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 12 proven. 88 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2020-10-14 18:27:19,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403504700] [2020-10-14 18:27:19,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:27:19,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 18:27:19,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295665786] [2020-10-14 18:27:19,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 18:27:19,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:27:19,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 18:27:19,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 18:27:19,451 INFO L87 Difference]: Start difference. First operand 172 states and 189 transitions. Second operand 9 states. [2020-10-14 18:27:19,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:27:19,698 INFO L93 Difference]: Finished difference Result 290 states and 320 transitions. [2020-10-14 18:27:19,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 18:27:19,699 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 116 [2020-10-14 18:27:19,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:27:19,701 INFO L225 Difference]: With dead ends: 290 [2020-10-14 18:27:19,701 INFO L226 Difference]: Without dead ends: 184 [2020-10-14 18:27:19,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:27:19,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-14 18:27:19,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 178. [2020-10-14 18:27:19,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-14 18:27:19,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 197 transitions. [2020-10-14 18:27:19,748 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 197 transitions. Word has length 116 [2020-10-14 18:27:19,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:27:19,749 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 197 transitions. [2020-10-14 18:27:19,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 18:27:19,749 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 197 transitions. [2020-10-14 18:27:19,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 18:27:19,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:27:19,754 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:27:19,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 18:27:19,755 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:27:19,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:27:19,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1006142768, now seen corresponding path program 20 times [2020-10-14 18:27:19,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:27:19,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952072289] [2020-10-14 18:27:19,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:27:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:19,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:19,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:23,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:24,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:24,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 18:27:24,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:27:24,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 18:27:24,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:24,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:24,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 18:27:24,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 18:27:24,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 18:27:24,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:25,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:27:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:25,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:25,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:25,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:27:25,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:25,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:25,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:25,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:25,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:25,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:25,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:25,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:27:25,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 18:27:25,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:25,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:25,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:25,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:25,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:25,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:27:25,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:25,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:25,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:25,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:25,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:25,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:27:25,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 18:27:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:25,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:25,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:25,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:25,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:25,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:27:25,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:25,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:25,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:25,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:25,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:25,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:27:25,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:27:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:25,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:25,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:25,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:25,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:25,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:27:25,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:25,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:25,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:25,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:25,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:25,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:27:25,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 18:27:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:25,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:25,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:25,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:25,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:25,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:27:25,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:25,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:25,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:25,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:25,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:25,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:27:25,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 18:27:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:25,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:25,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:25,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:25,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:25,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:27:25,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:25,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:25,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:25,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:25,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:25,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:25,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 18:27:25,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:25,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:25,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:25,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:25,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:25,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:27:25,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:25,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:25,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:25,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:25,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:25,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:27:25,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 18:27:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:25,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:25,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:25,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:25,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:25,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:27:25,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:25,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:25,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:25,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:25,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:25,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:27:25,573 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 14 proven. 218 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-10-14 18:27:25,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952072289] [2020-10-14 18:27:25,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:27:25,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 18:27:25,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102050666] [2020-10-14 18:27:25,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 18:27:25,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:27:25,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 18:27:25,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-10-14 18:27:25,575 INFO L87 Difference]: Start difference. First operand 178 states and 197 transitions. Second operand 23 states. [2020-10-14 18:27:27,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:27:27,376 INFO L93 Difference]: Finished difference Result 255 states and 291 transitions. [2020-10-14 18:27:27,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 18:27:27,378 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 119 [2020-10-14 18:27:27,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:27:27,381 INFO L225 Difference]: With dead ends: 255 [2020-10-14 18:27:27,381 INFO L226 Difference]: Without dead ends: 253 [2020-10-14 18:27:27,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=100, Invalid=1160, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 18:27:27,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-10-14 18:27:27,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 226. [2020-10-14 18:27:27,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-14 18:27:27,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 255 transitions. [2020-10-14 18:27:27,417 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 255 transitions. Word has length 119 [2020-10-14 18:27:27,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:27:27,418 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 255 transitions. [2020-10-14 18:27:27,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 18:27:27,418 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 255 transitions. [2020-10-14 18:27:27,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 18:27:27,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:27:27,420 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:27:27,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 18:27:27,420 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:27:27,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:27:27,421 INFO L82 PathProgramCache]: Analyzing trace with hash 2118561900, now seen corresponding path program 10 times [2020-10-14 18:27:27,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:27:27,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217967696] [2020-10-14 18:27:27,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:27:27,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:27,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:27,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:27,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:27,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:32,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:32,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 18:27:32,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 18:27:32,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 18:27:32,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:32,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:32,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 18:27:32,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:27:32,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 18:27:32,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:32,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:27:32,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:32,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:32,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:32,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:27:32,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:32,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:32,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:32,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:32,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:32,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:32,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:32,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:32,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 18:27:32,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:32,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:32,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:32,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:32,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:32,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:27:32,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:32,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:32,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:32,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:32,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:32,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:32,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:27:32,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:32,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:32,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:32,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:32,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:32,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:27:32,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:32,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:32,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:32,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:32,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:32,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:32,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 18:27:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:32,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:32,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:32,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:32,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:32,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:27:32,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:32,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:32,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:32,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:32,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:32,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:32,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 18:27:32,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:32,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:32,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:32,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:32,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:32,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:32,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:32,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:32,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:32,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:32,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:32,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:32,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 18:27:32,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:32,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:32,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:32,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:32,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:32,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:27:32,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:32,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:32,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:32,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:32,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:32,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:32,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 18:27:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:32,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:32,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:32,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:32,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:32,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:32,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:32,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:32,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:32,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:32,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:32,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:32,553 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 12 proven. 119 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2020-10-14 18:27:32,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217967696] [2020-10-14 18:27:32,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:27:32,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 18:27:32,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933301184] [2020-10-14 18:27:32,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:27:32,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:27:32,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:27:32,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:27:32,555 INFO L87 Difference]: Start difference. First operand 226 states and 255 transitions. Second operand 10 states. [2020-10-14 18:27:32,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:27:32,776 INFO L93 Difference]: Finished difference Result 342 states and 384 transitions. [2020-10-14 18:27:32,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 18:27:32,776 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 119 [2020-10-14 18:27:32,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:27:32,778 INFO L225 Difference]: With dead ends: 342 [2020-10-14 18:27:32,778 INFO L226 Difference]: Without dead ends: 236 [2020-10-14 18:27:32,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:27:32,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-10-14 18:27:32,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 232. [2020-10-14 18:27:32,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-14 18:27:32,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 263 transitions. [2020-10-14 18:27:32,806 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 263 transitions. Word has length 119 [2020-10-14 18:27:32,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:27:32,806 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 263 transitions. [2020-10-14 18:27:32,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:27:32,806 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 263 transitions. [2020-10-14 18:27:32,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 18:27:32,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:27:32,808 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:27:32,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 18:27:32,808 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:27:32,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:27:32,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1353191724, now seen corresponding path program 2 times [2020-10-14 18:27:32,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:27:32,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573502067] [2020-10-14 18:27:32,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:27:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:32,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:32,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:35,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:35,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:37,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:37,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 18:27:37,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 18:27:37,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 18:27:37,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:37,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:37,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 18:27:37,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:27:37,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 18:27:37,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:37,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:27:37,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:37,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:37,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:37,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:27:37,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:37,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:37,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:37,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:37,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:37,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:37,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:37,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:37,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 18:27:37,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:37,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:37,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:37,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:37,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:37,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:37,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:37,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:37,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:37,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:37,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:37,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:37,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 18:27:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:37,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:37,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:37,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:37,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:37,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:37,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:37,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:37,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:37,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:37,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:37,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:37,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:27:37,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:37,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:37,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:37,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:37,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:37,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:37,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:37,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:37,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:37,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:37,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:37,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:37,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 18:27:37,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:37,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:37,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:37,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:37,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:37,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:37,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:37,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:37,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:37,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:37,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:37,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:37,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 18:27:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:37,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:37,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:37,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:37,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:37,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:37,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:37,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:37,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:37,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:37,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:37,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:37,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 18:27:37,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:37,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:37,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:37,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:37,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:37,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:37,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:37,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:37,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:37,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:37,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:37,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:37,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 18:27:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:37,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:37,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:37,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:37,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:37,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:37,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:37,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:37,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:37,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:37,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:37,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:37,968 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 44 proven. 119 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2020-10-14 18:27:37,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573502067] [2020-10-14 18:27:37,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:27:37,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 18:27:37,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452194490] [2020-10-14 18:27:37,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 18:27:37,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:27:37,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 18:27:37,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:27:37,971 INFO L87 Difference]: Start difference. First operand 232 states and 263 transitions. Second operand 12 states. [2020-10-14 18:27:38,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:27:38,243 INFO L93 Difference]: Finished difference Result 257 states and 292 transitions. [2020-10-14 18:27:38,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 18:27:38,244 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 122 [2020-10-14 18:27:38,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:27:38,246 INFO L225 Difference]: With dead ends: 257 [2020-10-14 18:27:38,246 INFO L226 Difference]: Without dead ends: 243 [2020-10-14 18:27:38,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=243, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:27:38,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-14 18:27:38,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 237. [2020-10-14 18:27:38,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-10-14 18:27:38,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 268 transitions. [2020-10-14 18:27:38,276 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 268 transitions. Word has length 122 [2020-10-14 18:27:38,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:27:38,278 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 268 transitions. [2020-10-14 18:27:38,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 18:27:38,278 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 268 transitions. [2020-10-14 18:27:38,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 18:27:38,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:27:38,280 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:27:38,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 18:27:38,282 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:27:38,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:27:38,282 INFO L82 PathProgramCache]: Analyzing trace with hash -881756935, now seen corresponding path program 21 times [2020-10-14 18:27:38,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:27:38,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737378301] [2020-10-14 18:27:38,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:27:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:38,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:38,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:41,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:43,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:43,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 18:27:43,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:27:43,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 18:27:43,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:43,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:43,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 18:27:43,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:27:43,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 18:27:43,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:44,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:27:44,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:44,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:44,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:44,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:27:44,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:44,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:44,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:44,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:44,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:44,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:44,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:44,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:44,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 18:27:44,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:44,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:44,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:44,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:44,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:44,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:27:44,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:44,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:44,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:44,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:44,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:44,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:44,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 18:27:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:44,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:44,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:44,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:44,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:44,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:44,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:44,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:44,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:44,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:44,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:44,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:44,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 18:27:44,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:44,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:44,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:44,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:44,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:44,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:44,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:44,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:44,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:44,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:44,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:44,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:44,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 18:27:44,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:44,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:44,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:44,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:44,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:44,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:44,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:44,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:44,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:44,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:44,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:44,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:44,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 18:27:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:44,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:44,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:44,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:44,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:44,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:44,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:44,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:44,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:44,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:44,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:44,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:44,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-14 18:27:44,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:44,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:44,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:44,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:44,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:44,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:44,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:44,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:44,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:44,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:44,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:44,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:44,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-14 18:27:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:44,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:44,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:44,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:44,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:44,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:44,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:44,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:44,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:44,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:44,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:44,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:44,220 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 14 proven. 241 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-10-14 18:27:44,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737378301] [2020-10-14 18:27:44,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:27:44,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 18:27:44,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915087341] [2020-10-14 18:27:44,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 18:27:44,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:27:44,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 18:27:44,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2020-10-14 18:27:44,222 INFO L87 Difference]: Start difference. First operand 237 states and 268 transitions. Second operand 24 states. [2020-10-14 18:27:46,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:27:46,122 INFO L93 Difference]: Finished difference Result 367 states and 427 transitions. [2020-10-14 18:27:46,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 18:27:46,122 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 122 [2020-10-14 18:27:46,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:27:46,124 INFO L225 Difference]: With dead ends: 367 [2020-10-14 18:27:46,124 INFO L226 Difference]: Without dead ends: 365 [2020-10-14 18:27:46,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=121, Invalid=1211, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 18:27:46,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-10-14 18:27:46,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 306. [2020-10-14 18:27:46,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-10-14 18:27:46,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 356 transitions. [2020-10-14 18:27:46,154 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 356 transitions. Word has length 122 [2020-10-14 18:27:46,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:27:46,154 INFO L479 AbstractCegarLoop]: Abstraction has 306 states and 356 transitions. [2020-10-14 18:27:46,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 18:27:46,154 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 356 transitions. [2020-10-14 18:27:46,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 18:27:46,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:27:46,156 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:27:46,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 18:27:46,156 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:27:46,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:27:46,157 INFO L82 PathProgramCache]: Analyzing trace with hash 265557081, now seen corresponding path program 11 times [2020-10-14 18:27:46,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:27:46,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758977949] [2020-10-14 18:27:46,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:27:46,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:46,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:46,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:46,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:46,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:51,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:51,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 18:27:51,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 18:27:51,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 18:27:51,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:51,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:51,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 18:27:51,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:27:51,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 18:27:51,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:51,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:27:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:51,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:51,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:51,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:27:51,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:51,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:51,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:51,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:51,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:51,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:51,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:51,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:51,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 18:27:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:51,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:51,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:51,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:51,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:51,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:27:51,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:51,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:51,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:51,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:51,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:51,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:51,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 18:27:51,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:51,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:51,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:51,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:51,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:51,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:27:51,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:51,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:51,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:51,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:51,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:51,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:51,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 18:27:51,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:51,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:51,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:51,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:51,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:51,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:27:51,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:51,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:51,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:51,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:51,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:51,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:51,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 18:27:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:51,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:51,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:51,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:51,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:51,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:27:51,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:51,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:51,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:51,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:51,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:51,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:51,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-14 18:27:51,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:51,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:51,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:51,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:51,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:51,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:27:51,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:51,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:51,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:51,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:51,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:51,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:51,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-14 18:27:51,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:51,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:51,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:51,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:51,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:51,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:27:51,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:51,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:51,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:51,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:51,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:51,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:51,268 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 12 proven. 153 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2020-10-14 18:27:51,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [758977949] [2020-10-14 18:27:51,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:27:51,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 18:27:51,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955937795] [2020-10-14 18:27:51,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 18:27:51,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:27:51,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 18:27:51,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-14 18:27:51,270 INFO L87 Difference]: Start difference. First operand 306 states and 356 transitions. Second operand 11 states. [2020-10-14 18:27:51,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:27:51,523 INFO L93 Difference]: Finished difference Result 514 states and 598 transitions. [2020-10-14 18:27:51,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 18:27:51,524 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 122 [2020-10-14 18:27:51,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:27:51,526 INFO L225 Difference]: With dead ends: 514 [2020-10-14 18:27:51,526 INFO L226 Difference]: Without dead ends: 326 [2020-10-14 18:27:51,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2020-10-14 18:27:51,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-10-14 18:27:51,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 318. [2020-10-14 18:27:51,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-10-14 18:27:51,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 372 transitions. [2020-10-14 18:27:51,561 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 372 transitions. Word has length 122 [2020-10-14 18:27:51,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:27:51,561 INFO L479 AbstractCegarLoop]: Abstraction has 318 states and 372 transitions. [2020-10-14 18:27:51,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 18:27:51,561 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 372 transitions. [2020-10-14 18:27:51,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-14 18:27:51,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:27:51,563 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:27:51,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 18:27:51,563 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:27:51,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:27:51,564 INFO L82 PathProgramCache]: Analyzing trace with hash 613649740, now seen corresponding path program 12 times [2020-10-14 18:27:51,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:27:51,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814115825] [2020-10-14 18:27:51,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:27:51,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:51,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:51,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:51,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:53,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:56,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:56,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 18:27:56,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 18:27:56,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 18:27:56,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:56,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:56,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 18:27:56,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:27:56,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 18:27:56,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:56,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:27:56,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:56,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:56,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:56,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:27:56,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:56,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:56,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:56,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:56,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:56,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:56,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:56,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:56,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 18:27:56,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:56,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:56,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:56,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:56,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:56,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:56,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:56,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:56,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:56,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:56,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:56,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:56,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-14 18:27:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:56,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:56,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:56,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:56,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:56,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:27:56,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:56,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:56,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:56,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:56,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:56,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:56,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 18:27:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:56,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:56,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:56,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:56,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:56,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:56,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:56,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:56,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:56,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:56,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:56,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:56,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 18:27:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:56,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:56,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:56,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:56,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:56,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:27:56,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:56,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:56,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:56,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:56,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:56,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:56,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 18:27:56,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:56,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:56,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:56,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:56,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:56,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:27:56,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:56,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:56,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:56,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:56,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:56,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:56,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-14 18:27:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:56,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:56,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:56,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:56,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:56,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:27:56,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:56,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:56,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:56,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:56,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:56,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:56,699 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 12 proven. 190 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2020-10-14 18:27:56,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814115825] [2020-10-14 18:27:56,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:27:56,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 18:27:56,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877297829] [2020-10-14 18:27:56,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 18:27:56,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:27:56,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 18:27:56,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:27:56,700 INFO L87 Difference]: Start difference. First operand 318 states and 372 transitions. Second operand 12 states. [2020-10-14 18:27:56,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:27:56,937 INFO L93 Difference]: Finished difference Result 527 states and 615 transitions. [2020-10-14 18:27:56,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 18:27:56,937 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 125 [2020-10-14 18:27:56,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:27:56,939 INFO L225 Difference]: With dead ends: 527 [2020-10-14 18:27:56,940 INFO L226 Difference]: Without dead ends: 339 [2020-10-14 18:27:56,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=243, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:27:56,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-10-14 18:27:56,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 330. [2020-10-14 18:27:56,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2020-10-14 18:27:56,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 388 transitions. [2020-10-14 18:27:56,980 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 388 transitions. Word has length 125 [2020-10-14 18:27:56,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:27:56,980 INFO L479 AbstractCegarLoop]: Abstraction has 330 states and 388 transitions. [2020-10-14 18:27:56,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 18:27:56,980 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 388 transitions. [2020-10-14 18:27:56,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 18:27:56,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:27:56,982 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:27:56,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 18:27:56,982 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:27:56,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:27:56,983 INFO L82 PathProgramCache]: Analyzing trace with hash -158247241, now seen corresponding path program 22 times [2020-10-14 18:27:56,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:27:56,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673731274] [2020-10-14 18:27:56,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:27:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:56,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:57,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:01,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:01,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 18:28:01,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:28:01,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4330 [2020-10-14 18:28:01,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:01,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:01,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 18:28:01,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 18:28:01,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 18:28:01,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:01,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:28:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:01,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:01,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:01,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:28:01,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:01,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:01,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:01,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:01,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:01,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:01,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:01,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:01,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 18:28:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:01,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:01,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:01,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:01,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:01,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:01,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:01,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:01,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:01,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:01,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:01,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:01,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 18:28:01,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:01,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:01,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:01,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:01,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:01,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:01,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:01,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:01,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:01,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:01,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:01,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:01,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 18:28:01,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:01,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:01,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:01,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:01,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:01,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:01,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:01,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:01,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:01,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:01,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:01,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:01,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 18:28:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:01,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:01,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:01,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:01,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:01,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:01,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:01,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:01,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:01,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:01,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:01,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:01,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 18:28:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:01,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:01,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:01,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:01,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:01,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:01,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:01,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:01,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:01,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:01,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:01,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:01,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 18:28:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:01,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:01,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:01,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:01,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:01,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:01,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:01,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:01,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:01,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:01,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:01,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:01,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 18:28:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:01,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:01,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:01,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:01,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:01,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:01,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:01,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:01,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:01,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:01,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:01,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:01,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-14 18:28:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:01,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:01,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:01,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:01,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:01,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:01,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:01,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:01,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:01,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:01,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:01,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:01,442 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 16 proven. 92 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2020-10-14 18:28:01,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673731274] [2020-10-14 18:28:01,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:28:01,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 18:28:01,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330604640] [2020-10-14 18:28:01,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 18:28:01,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:28:01,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 18:28:01,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:28:01,443 INFO L87 Difference]: Start difference. First operand 330 states and 388 transitions. Second operand 12 states. [2020-10-14 18:28:01,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:28:01,645 INFO L93 Difference]: Finished difference Result 660 states and 781 transitions. [2020-10-14 18:28:01,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 18:28:01,646 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-10-14 18:28:01,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:28:01,647 INFO L225 Difference]: With dead ends: 660 [2020-10-14 18:28:01,648 INFO L226 Difference]: Without dead ends: 353 [2020-10-14 18:28:01,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:28:01,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2020-10-14 18:28:01,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 332. [2020-10-14 18:28:01,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-10-14 18:28:01,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 390 transitions. [2020-10-14 18:28:01,677 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 390 transitions. Word has length 128 [2020-10-14 18:28:01,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:28:01,677 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 390 transitions. [2020-10-14 18:28:01,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 18:28:01,678 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 390 transitions. [2020-10-14 18:28:01,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 18:28:01,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:28:01,679 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 9, 9, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:28:01,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 18:28:01,680 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:28:01,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:28:01,680 INFO L82 PathProgramCache]: Analyzing trace with hash 732178331, now seen corresponding path program 13 times [2020-10-14 18:28:01,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:28:01,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104591837] [2020-10-14 18:28:01,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:28:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:01,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:01,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:01,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:04,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:06,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:06,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 18:28:06,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 18:28:06,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 18:28:06,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:06,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:06,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 18:28:06,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:28:06,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 18:28:06,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:06,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:28:06,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:06,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:06,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:06,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:28:06,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:06,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:06,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:06,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:06,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:06,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:06,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:06,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:06,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 18:28:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:06,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:06,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:06,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:06,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:06,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:06,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:06,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:06,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:06,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:06,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:06,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:06,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 18:28:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:06,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:06,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:06,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:06,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:06,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:06,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:06,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:06,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:06,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:06,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:06,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:06,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:28:06,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:06,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:06,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:06,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:06,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:06,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:06,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:06,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:06,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:06,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:06,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:06,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:06,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 18:28:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:06,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:06,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:06,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:06,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:06,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:06,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:06,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:06,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:06,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:06,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:06,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:06,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 18:28:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:06,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:06,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:06,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:06,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:06,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:06,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:06,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:06,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:06,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:06,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:06,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:06,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 18:28:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:06,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:06,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:06,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:06,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:06,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:06,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:06,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:06,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:06,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:06,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:06,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:06,842 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 12 proven. 230 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2020-10-14 18:28:06,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104591837] [2020-10-14 18:28:06,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:28:06,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 18:28:06,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619278243] [2020-10-14 18:28:06,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 18:28:06,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:28:06,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 18:28:06,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:28:06,843 INFO L87 Difference]: Start difference. First operand 332 states and 390 transitions. Second operand 13 states. [2020-10-14 18:28:07,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:28:07,139 INFO L93 Difference]: Finished difference Result 543 states and 635 transitions. [2020-10-14 18:28:07,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 18:28:07,139 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 130 [2020-10-14 18:28:07,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:28:07,141 INFO L225 Difference]: With dead ends: 543 [2020-10-14 18:28:07,141 INFO L226 Difference]: Without dead ends: 355 [2020-10-14 18:28:07,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=167, Invalid=295, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:28:07,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-10-14 18:28:07,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 344. [2020-10-14 18:28:07,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-10-14 18:28:07,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 406 transitions. [2020-10-14 18:28:07,182 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 406 transitions. Word has length 130 [2020-10-14 18:28:07,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:28:07,182 INFO L479 AbstractCegarLoop]: Abstraction has 344 states and 406 transitions. [2020-10-14 18:28:07,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 18:28:07,183 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 406 transitions. [2020-10-14 18:28:07,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-14 18:28:07,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:28:07,184 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:28:07,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-14 18:28:07,185 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:28:07,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:28:07,185 INFO L82 PathProgramCache]: Analyzing trace with hash -959900852, now seen corresponding path program 23 times [2020-10-14 18:28:07,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:28:07,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977353883] [2020-10-14 18:28:07,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:28:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:07,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:07,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:10,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:12,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:12,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 18:28:12,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:28:12,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 18:28:12,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:12,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:12,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 18:28:12,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 18:28:12,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 18:28:12,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:12,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:28:12,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:12,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:12,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:12,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:28:12,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:12,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:12,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:12,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:12,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:12,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:12,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:12,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:12,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 18:28:12,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:12,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:12,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:12,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:12,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:12,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:12,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:12,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:12,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:12,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:12,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:12,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:12,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:28:12,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:12,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:12,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:12,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:12,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:12,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:12,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:12,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:12,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:12,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:12,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:12,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:12,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 18:28:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:12,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:12,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:12,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:12,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:12,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:28:12,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:12,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:12,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:12,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:12,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:12,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:12,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 18:28:12,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:12,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:12,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:12,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:12,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:12,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:12,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:12,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:12,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:12,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:12,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:12,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:12,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 18:28:12,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:12,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:12,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:12,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:12,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:12,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:12,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:12,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:12,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:12,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:12,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:12,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:12,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 18:28:12,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:12,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:12,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:12,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:12,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:12,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:12,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:12,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:12,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:12,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:12,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:12,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:12,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 18:28:12,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:12,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:12,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:12,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:12,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:12,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:12,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:12,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:12,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:12,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:12,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:12,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:12,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-14 18:28:12,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:12,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:12,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:12,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:12,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:12,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:12,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:12,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:12,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:12,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:12,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:12,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:12,988 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 16 proven. 281 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2020-10-14 18:28:12,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977353883] [2020-10-14 18:28:12,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:28:12,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 18:28:12,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400897239] [2020-10-14 18:28:12,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 18:28:12,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:28:12,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 18:28:12,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-10-14 18:28:12,990 INFO L87 Difference]: Start difference. First operand 344 states and 406 transitions. Second operand 25 states. [2020-10-14 18:28:15,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:28:15,160 INFO L93 Difference]: Finished difference Result 446 states and 532 transitions. [2020-10-14 18:28:15,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 18:28:15,161 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 133 [2020-10-14 18:28:15,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:28:15,163 INFO L225 Difference]: With dead ends: 446 [2020-10-14 18:28:15,163 INFO L226 Difference]: Without dead ends: 444 [2020-10-14 18:28:15,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=108, Invalid=1374, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 18:28:15,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-10-14 18:28:15,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 397. [2020-10-14 18:28:15,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-10-14 18:28:15,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 470 transitions. [2020-10-14 18:28:15,218 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 470 transitions. Word has length 133 [2020-10-14 18:28:15,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:28:15,218 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 470 transitions. [2020-10-14 18:28:15,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 18:28:15,219 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 470 transitions. [2020-10-14 18:28:15,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-14 18:28:15,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:28:15,221 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 9, 9, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:28:15,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-14 18:28:15,221 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:28:15,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:28:15,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1081828662, now seen corresponding path program 14 times [2020-10-14 18:28:15,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:28:15,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681893156] [2020-10-14 18:28:15,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:28:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:15,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:15,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:15,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:15,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:20,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:20,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 18:28:20,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 18:28:20,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 18:28:20,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:20,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:20,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 18:28:20,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:28:20,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 18:28:20,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:20,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:28:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:20,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:20,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:20,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:28:20,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:20,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:20,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:20,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:20,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:20,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:20,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:20,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:20,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 18:28:20,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:20,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:20,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:20,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:20,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:20,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:20,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:20,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:20,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:20,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:20,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:20,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:20,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 18:28:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:20,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:20,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:20,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:20,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:20,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:20,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:20,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:20,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:20,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:20,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:20,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:20,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 18:28:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:20,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:20,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:20,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:20,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:20,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:20,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:20,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:20,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:20,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:20,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:20,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:20,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 18:28:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:20,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:20,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:20,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:20,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:20,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:20,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:20,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:20,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:20,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:20,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:20,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:20,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 18:28:20,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:20,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:20,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:20,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:20,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:20,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:20,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:20,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:20,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:20,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:20,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:20,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:20,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-14 18:28:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:20,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:20,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:20,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:20,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:20,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:20,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:20,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:20,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:20,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:20,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:20,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:20,387 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 12 proven. 273 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2020-10-14 18:28:20,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681893156] [2020-10-14 18:28:20,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:28:20,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 18:28:20,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162902772] [2020-10-14 18:28:20,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 18:28:20,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:28:20,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 18:28:20,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:28:20,388 INFO L87 Difference]: Start difference. First operand 397 states and 470 transitions. Second operand 14 states. [2020-10-14 18:28:20,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:28:20,704 INFO L93 Difference]: Finished difference Result 744 states and 893 transitions. [2020-10-14 18:28:20,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 18:28:20,704 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 133 [2020-10-14 18:28:20,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:28:20,706 INFO L225 Difference]: With dead ends: 744 [2020-10-14 18:28:20,706 INFO L226 Difference]: Without dead ends: 372 [2020-10-14 18:28:20,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=352, Unknown=0, NotChecked=0, Total=552 [2020-10-14 18:28:20,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-10-14 18:28:20,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 358. [2020-10-14 18:28:20,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-10-14 18:28:20,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 424 transitions. [2020-10-14 18:28:20,747 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 424 transitions. Word has length 133 [2020-10-14 18:28:20,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:28:20,747 INFO L479 AbstractCegarLoop]: Abstraction has 358 states and 424 transitions. [2020-10-14 18:28:20,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 18:28:20,747 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 424 transitions. [2020-10-14 18:28:20,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 18:28:20,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:28:20,749 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:28:20,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-14 18:28:20,749 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:28:20,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:28:20,750 INFO L82 PathProgramCache]: Analyzing trace with hash 362124315, now seen corresponding path program 24 times [2020-10-14 18:28:20,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:28:20,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832849746] [2020-10-14 18:28:20,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:28:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:20,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:20,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:25,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:25,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:25,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 18:28:25,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:28:25,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 18:28:25,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:25,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:25,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 18:28:25,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:28:25,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-14 18:28:25,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:27,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:28:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:27,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:27,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:27,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:28:27,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:27,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:27,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:27,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:27,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:27,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:27,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:27,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:27,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 18:28:27,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:27,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:27,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:27,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:27,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:27,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:28:27,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:27,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:27,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:27,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:27,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:27,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:27,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 18:28:27,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:27,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:27,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:27,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:27,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:27,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:28:27,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:27,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:27,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:27,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:27,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:27,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:27,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 18:28:27,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:27,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:27,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:27,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:27,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:27,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:28:27,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:27,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:27,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:27,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:27,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:27,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:27,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 18:28:27,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:27,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:27,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:27,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:27,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:27,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:28:27,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:27,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:27,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:27,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:27,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:27,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:27,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 18:28:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:27,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:27,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:27,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:27,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:27,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:28:27,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:27,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:27,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:27,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:27,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:27,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:27,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-14 18:28:27,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:27,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:27,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:27,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:27,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:27,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:28:27,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:27,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:27,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:27,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:27,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:27,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:27,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-14 18:28:27,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:27,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:27,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:27,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:27,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:27,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:28:27,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:27,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:27,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:27,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:27,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:27,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:27,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-14 18:28:27,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:27,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:27,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:27,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:27,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:27,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:28:27,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:27,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:27,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:27,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:27,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:27,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:28:27,242 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 16 proven. 307 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2020-10-14 18:28:27,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832849746] [2020-10-14 18:28:27,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:28:27,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 18:28:27,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777223986] [2020-10-14 18:28:27,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 18:28:27,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:28:27,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 18:28:27,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2020-10-14 18:28:27,246 INFO L87 Difference]: Start difference. First operand 358 states and 424 transitions. Second operand 26 states. [2020-10-14 18:28:30,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:28:30,436 INFO L93 Difference]: Finished difference Result 662 states and 805 transitions. [2020-10-14 18:28:30,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 18:28:30,437 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 138 [2020-10-14 18:28:30,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:28:30,440 INFO L225 Difference]: With dead ends: 662 [2020-10-14 18:28:30,440 INFO L226 Difference]: Without dead ends: 660 [2020-10-14 18:28:30,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=136, Invalid=1346, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 18:28:30,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2020-10-14 18:28:30,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 641. [2020-10-14 18:28:30,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2020-10-14 18:28:30,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 782 transitions. [2020-10-14 18:28:30,526 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 782 transitions. Word has length 138 [2020-10-14 18:28:30,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:28:30,526 INFO L479 AbstractCegarLoop]: Abstraction has 641 states and 782 transitions. [2020-10-14 18:28:30,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 18:28:30,527 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 782 transitions. [2020-10-14 18:28:30,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 18:28:30,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:28:30,530 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 10, 10, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:28:30,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-14 18:28:30,530 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:28:30,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:28:30,531 INFO L82 PathProgramCache]: Analyzing trace with hash -705691811, now seen corresponding path program 15 times [2020-10-14 18:28:30,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:28:30,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639630852] [2020-10-14 18:28:30,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:28:30,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:30,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:30,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:30,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:31,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:35,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:35,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 18:28:35,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 18:28:35,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 18:28:35,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:35,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:35,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 18:28:35,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:28:35,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 18:28:35,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:35,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:28:35,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:35,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:35,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:35,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:28:35,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:35,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:35,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:35,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:35,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:35,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:35,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:35,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:35,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 18:28:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:35,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:35,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:35,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:35,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:35,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:35,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:35,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:35,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:35,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:35,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:35,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:35,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 18:28:35,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:35,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:35,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:35,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:35,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:35,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:35,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:35,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:35,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:35,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:35,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:35,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:35,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 18:28:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:35,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:35,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:35,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:35,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:35,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:35,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:35,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:35,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:35,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:35,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:35,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:35,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-14 18:28:35,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:35,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:35,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:35,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:35,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:35,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:35,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:35,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:35,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:35,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:35,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:35,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:35,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-14 18:28:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:35,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:35,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:35,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:35,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:35,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:35,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:35,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:35,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:35,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:35,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:35,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:35,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-14 18:28:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:35,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:35,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:35,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:35,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:35,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:35,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:35,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:35,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:35,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:35,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:35,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:35,729 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 12 proven. 319 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2020-10-14 18:28:35,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639630852] [2020-10-14 18:28:35,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:28:35,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 18:28:35,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166326280] [2020-10-14 18:28:35,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 18:28:35,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:28:35,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 18:28:35,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-10-14 18:28:35,731 INFO L87 Difference]: Start difference. First operand 641 states and 782 transitions. Second operand 15 states. [2020-10-14 18:28:36,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:28:36,160 INFO L93 Difference]: Finished difference Result 1298 states and 1604 transitions. [2020-10-14 18:28:36,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 18:28:36,161 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 138 [2020-10-14 18:28:36,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:28:36,164 INFO L225 Difference]: With dead ends: 1298 [2020-10-14 18:28:36,164 INFO L226 Difference]: Without dead ends: 684 [2020-10-14 18:28:36,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=236, Invalid=414, Unknown=0, NotChecked=0, Total=650 [2020-10-14 18:28:36,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2020-10-14 18:28:36,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 667. [2020-10-14 18:28:36,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 667 states. [2020-10-14 18:28:36,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 816 transitions. [2020-10-14 18:28:36,235 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 816 transitions. Word has length 138 [2020-10-14 18:28:36,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:28:36,236 INFO L479 AbstractCegarLoop]: Abstraction has 667 states and 816 transitions. [2020-10-14 18:28:36,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 18:28:36,236 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 816 transitions. [2020-10-14 18:28:36,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-14 18:28:36,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:28:36,239 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 11, 11, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:28:36,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-14 18:28:36,239 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:28:36,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:28:36,239 INFO L82 PathProgramCache]: Analyzing trace with hash 2030780134, now seen corresponding path program 16 times [2020-10-14 18:28:36,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:28:36,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643483265] [2020-10-14 18:28:36,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:28:36,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:36,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:36,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:36,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:36,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:41,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:41,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 18:28:41,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 18:28:41,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5104 [2020-10-14 18:28:41,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:41,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:41,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 18:28:41,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:28:41,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 18:28:41,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:41,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:28:41,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:41,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:41,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:41,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:28:41,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:41,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:41,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:41,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:41,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:41,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:41,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:41,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:41,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 18:28:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:41,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:41,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:41,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:41,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:41,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:41,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:41,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:41,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:41,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:41,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:41,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:41,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 18:28:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:41,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:41,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:41,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:41,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:41,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:41,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:41,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:41,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:41,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:41,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:41,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:41,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 18:28:41,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:41,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:41,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:41,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:41,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:41,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:41,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:41,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:41,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:41,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:41,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:41,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:41,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-14 18:28:41,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:41,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:41,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:41,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:41,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:41,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:41,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:41,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:41,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:41,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:41,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:41,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:41,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-14 18:28:41,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:41,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:41,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:41,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:41,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:41,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:41,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:41,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:41,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:41,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:41,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:41,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:41,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 18:28:41,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:41,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:41,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:41,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:41,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:41,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:28:41,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:41,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:41,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:41,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:41,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:41,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:41,548 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 12 proven. 368 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2020-10-14 18:28:41,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643483265] [2020-10-14 18:28:41,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:28:41,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 18:28:41,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950905503] [2020-10-14 18:28:41,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 18:28:41,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:28:41,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 18:28:41,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:28:41,550 INFO L87 Difference]: Start difference. First operand 667 states and 816 transitions. Second operand 16 states. [2020-10-14 18:28:41,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:28:42,000 INFO L93 Difference]: Finished difference Result 1348 states and 1670 transitions. [2020-10-14 18:28:42,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 18:28:42,000 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 143 [2020-10-14 18:28:42,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:28:42,003 INFO L225 Difference]: With dead ends: 1348 [2020-10-14 18:28:42,003 INFO L226 Difference]: Without dead ends: 710 [2020-10-14 18:28:42,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=275, Invalid=481, Unknown=0, NotChecked=0, Total=756 [2020-10-14 18:28:42,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2020-10-14 18:28:42,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 693. [2020-10-14 18:28:42,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-10-14 18:28:42,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 850 transitions. [2020-10-14 18:28:42,087 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 850 transitions. Word has length 143 [2020-10-14 18:28:42,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:28:42,088 INFO L479 AbstractCegarLoop]: Abstraction has 693 states and 850 transitions. [2020-10-14 18:28:42,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 18:28:42,088 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 850 transitions. [2020-10-14 18:28:42,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-14 18:28:42,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:28:42,091 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 12, 12, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:28:42,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-14 18:28:42,091 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:28:42,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:28:42,092 INFO L82 PathProgramCache]: Analyzing trace with hash 2142950209, now seen corresponding path program 17 times [2020-10-14 18:28:42,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:28:42,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656858001] [2020-10-14 18:28:42,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:28:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:42,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:42,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:42,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:47,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:47,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-14 18:28:47,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:28:47,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 18:28:47,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:47,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:47,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 18:28:47,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 18:28:47,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 18:28:47,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:47,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:28:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:47,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:47,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:47,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:28:47,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:47,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:47,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:47,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:47,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:47,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:47,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:47,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:47,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:28:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:47,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:47,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:47,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:47,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:47,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:47,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:47,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:47,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:47,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:47,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:47,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:47,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 18:28:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:47,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:47,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:47,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:47,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:47,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:47,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:47,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:47,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:47,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:47,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:47,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:47,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 18:28:47,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:47,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:47,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:47,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:47,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:47,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:47,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:47,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:47,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:47,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:47,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:47,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:47,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 18:28:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:47,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:47,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:47,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:47,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:47,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:47,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:47,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:47,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:47,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:47,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:47,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:47,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 18:28:47,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:47,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:47,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:47,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:47,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:47,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:47,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:47,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:47,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:47,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:47,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:47,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:47,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 18:28:47,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:47,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:47,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:47,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:47,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:47,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:47,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:47,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:47,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:47,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:47,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:47,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:47,333 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 12 proven. 420 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2020-10-14 18:28:47,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656858001] [2020-10-14 18:28:47,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:28:47,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 18:28:47,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092673622] [2020-10-14 18:28:47,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 18:28:47,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:28:47,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 18:28:47,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2020-10-14 18:28:47,335 INFO L87 Difference]: Start difference. First operand 693 states and 850 transitions. Second operand 17 states. [2020-10-14 18:28:47,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:28:47,813 INFO L93 Difference]: Finished difference Result 1085 states and 1321 transitions. [2020-10-14 18:28:47,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 18:28:47,814 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 148 [2020-10-14 18:28:47,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:28:47,816 INFO L225 Difference]: With dead ends: 1085 [2020-10-14 18:28:47,816 INFO L226 Difference]: Without dead ends: 742 [2020-10-14 18:28:47,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=317, Invalid=553, Unknown=0, NotChecked=0, Total=870 [2020-10-14 18:28:47,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2020-10-14 18:28:47,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 717. [2020-10-14 18:28:47,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2020-10-14 18:28:47,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 882 transitions. [2020-10-14 18:28:47,898 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 882 transitions. Word has length 148 [2020-10-14 18:28:47,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:28:47,898 INFO L479 AbstractCegarLoop]: Abstraction has 717 states and 882 transitions. [2020-10-14 18:28:47,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 18:28:47,898 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 882 transitions. [2020-10-14 18:28:47,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-14 18:28:47,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:28:47,901 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 10, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:28:47,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-14 18:28:47,902 INFO L427 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:28:47,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:28:47,902 INFO L82 PathProgramCache]: Analyzing trace with hash 277366813, now seen corresponding path program 3 times [2020-10-14 18:28:47,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:28:47,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144871519] [2020-10-14 18:28:47,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:28:47,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:47,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:47,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking...