/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/fragtest_simple.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:10:56,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:10:56,396 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:10:56,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:10:56,441 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:10:56,453 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:10:56,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:10:56,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:10:56,462 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:10:56,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:10:56,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:10:56,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:10:56,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:10:56,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:10:56,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:10:56,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:10:56,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:10:56,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:10:56,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:10:56,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:10:56,491 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:10:56,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:10:56,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:10:56,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:10:56,498 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:10:56,498 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:10:56,499 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:10:56,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:10:56,503 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:10:56,505 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:10:56,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:10:56,506 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:10:56,507 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:10:56,508 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:10:56,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:10:56,509 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:10:56,510 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:10:56,510 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:10:56,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:10:56,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:10:56,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:10:56,514 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 09:10:56,563 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:10:56,563 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:10:56,566 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:10:56,566 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:10:56,566 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:10:56,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:10:56,567 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:10:56,567 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:10:56,567 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:10:56,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:10:56,568 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:10:56,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:10:56,569 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:10:56,569 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:10:56,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:10:56,570 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:10:56,570 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:10:56,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:10:56,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:10:56,570 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:10:56,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:10:56,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:10:56,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:10:56,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:10:56,571 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:10:56,572 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:10:56,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:10:56,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:10:56,572 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:10:56,572 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:10:57,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:10:57,084 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:10:57,089 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:10:57,091 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:10:57,092 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:10:57,093 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2020-09-25 09:10:57,191 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/566886c0e/02c49966f64c47a3be1499ad5796cd19/FLAG8bac1ec74 [2020-09-25 09:10:57,715 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:10:57,716 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2020-09-25 09:10:57,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/566886c0e/02c49966f64c47a3be1499ad5796cd19/FLAG8bac1ec74 [2020-09-25 09:10:58,063 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/566886c0e/02c49966f64c47a3be1499ad5796cd19 [2020-09-25 09:10:58,075 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:10:58,080 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:10:58,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:10:58,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:10:58,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:10:58,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:10:58" (1/1) ... [2020-09-25 09:10:58,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bc51459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:58, skipping insertion in model container [2020-09-25 09:10:58,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:10:58" (1/1) ... [2020-09-25 09:10:58,101 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:10:58,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:10:58,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:10:58,361 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:10:58,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:10:58,409 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:10:58,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:58 WrapperNode [2020-09-25 09:10:58,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:10:58,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:10:58,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:10:58,411 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:10:58,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:58" (1/1) ... [2020-09-25 09:10:58,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:58" (1/1) ... [2020-09-25 09:10:58,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:58" (1/1) ... [2020-09-25 09:10:58,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:58" (1/1) ... [2020-09-25 09:10:58,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:58" (1/1) ... [2020-09-25 09:10:58,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:58" (1/1) ... [2020-09-25 09:10:58,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:58" (1/1) ... [2020-09-25 09:10:58,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:10:58,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:10:58,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:10:58,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:10:58,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:10:58,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:10:58,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:10:58,673 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 09:10:58,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 09:10:58,673 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:10:58,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:10:58,673 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 09:10:58,673 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 09:10:58,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 09:10:58,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:10:58,674 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:10:58,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:10:58,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:10:59,047 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:10:59,047 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 09:10:59,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:10:59 BoogieIcfgContainer [2020-09-25 09:10:59,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:10:59,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:10:59,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:10:59,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:10:59,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:10:58" (1/3) ... [2020-09-25 09:10:59,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bfff673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:10:59, skipping insertion in model container [2020-09-25 09:10:59,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:58" (2/3) ... [2020-09-25 09:10:59,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bfff673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:10:59, skipping insertion in model container [2020-09-25 09:10:59,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:10:59" (3/3) ... [2020-09-25 09:10:59,068 INFO L109 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i [2020-09-25 09:10:59,079 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:10:59,090 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:10:59,113 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:10:59,143 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:10:59,144 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:10:59,144 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:10:59,144 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:10:59,144 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:10:59,144 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:10:59,144 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:10:59,144 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:10:59,166 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-09-25 09:10:59,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 09:10:59,174 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:10:59,176 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:10:59,176 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:10:59,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:10:59,183 INFO L82 PathProgramCache]: Analyzing trace with hash -815601615, now seen corresponding path program 1 times [2020-09-25 09:10:59,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:10:59,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2834003] [2020-09-25 09:10:59,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:10:59,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:59,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:59,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:59,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:59,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:59,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 09:10:59,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:10:59,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 09:10:59,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:59,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:59,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:10:59,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 09:10:59,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:10:59,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:10:59,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:10:59,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:59,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:59,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:59,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:10:59,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:59,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:10:59,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:59,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:59,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:10:59,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:10:59,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:10:59,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:59,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:10:59,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2834003] [2020-09-25 09:10:59,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:10:59,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-25 09:10:59,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673850035] [2020-09-25 09:10:59,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-25 09:10:59,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:10:59,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-25 09:10:59,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 09:10:59,547 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2020-09-25 09:10:59,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:10:59,585 INFO L93 Difference]: Finished difference Result 76 states and 91 transitions. [2020-09-25 09:10:59,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-25 09:10:59,587 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2020-09-25 09:10:59,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:10:59,600 INFO L225 Difference]: With dead ends: 76 [2020-09-25 09:10:59,600 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 09:10:59,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 09:10:59,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 09:10:59,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 09:10:59,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 09:10:59,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2020-09-25 09:10:59,651 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 24 [2020-09-25 09:10:59,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:10:59,652 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2020-09-25 09:10:59,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-25 09:10:59,652 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2020-09-25 09:10:59,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-25 09:10:59,654 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:10:59,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:10:59,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:10:59,655 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:10:59,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:10:59,655 INFO L82 PathProgramCache]: Analyzing trace with hash -2089093357, now seen corresponding path program 1 times [2020-09-25 09:10:59,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:10:59,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030928954] [2020-09-25 09:10:59,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:10:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:59,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:59,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:59,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 09:10:59,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:59,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 09:10:59,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:59,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:59,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:10:59,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:10:59,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 09:10:59,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:10:59,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:10:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:59,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:59,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:59,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:10:59,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:59,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:10:59,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:59,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:59,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:10:59,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:10:59,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:10:59,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:59,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:10:59,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030928954] [2020-09-25 09:10:59,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:10:59,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:10:59,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759039362] [2020-09-25 09:10:59,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:10:59,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:10:59,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:10:59,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:10:59,834 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 5 states. [2020-09-25 09:10:59,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:10:59,896 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2020-09-25 09:10:59,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:10:59,897 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-09-25 09:10:59,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:10:59,899 INFO L225 Difference]: With dead ends: 51 [2020-09-25 09:10:59,899 INFO L226 Difference]: Without dead ends: 49 [2020-09-25 09:10:59,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:10:59,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-25 09:10:59,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2020-09-25 09:10:59,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 09:10:59,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2020-09-25 09:10:59,913 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 28 [2020-09-25 09:10:59,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:10:59,914 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2020-09-25 09:10:59,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:10:59,914 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2020-09-25 09:10:59,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 09:10:59,916 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:10:59,917 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:10:59,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:10:59,917 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:10:59,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:10:59,919 INFO L82 PathProgramCache]: Analyzing trace with hash -594427423, now seen corresponding path program 1 times [2020-09-25 09:10:59,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:10:59,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627120086] [2020-09-25 09:10:59,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:10:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:00,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:00,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:00,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 09:11:00,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:00,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-25 09:11:00,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:00,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:00,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:11:00,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 09:11:00,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 09:11:00,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:00,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:11:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:00,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:00,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:00,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:11:00,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:00,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:11:00,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:00,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:00,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:11:00,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:00,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:11:00,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:00,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 09:11:00,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:00,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:00,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:00,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:00,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:00,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 09:11:00,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:00,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:00,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:00,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:00,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:00,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:00,292 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:11:00,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627120086] [2020-09-25 09:11:00,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:11:00,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 09:11:00,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266991707] [2020-09-25 09:11:00,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:11:00,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:11:00,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:11:00,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:11:00,296 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 6 states. [2020-09-25 09:11:00,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:11:00,432 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2020-09-25 09:11:00,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:11:00,433 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-25 09:11:00,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:11:00,438 INFO L225 Difference]: With dead ends: 82 [2020-09-25 09:11:00,439 INFO L226 Difference]: Without dead ends: 61 [2020-09-25 09:11:00,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:11:00,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-25 09:11:00,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 50. [2020-09-25 09:11:00,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 09:11:00,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2020-09-25 09:11:00,455 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 38 [2020-09-25 09:11:00,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:11:00,456 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2020-09-25 09:11:00,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:11:00,456 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2020-09-25 09:11:00,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 09:11:00,457 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:11:00,458 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:11:00,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:11:00,458 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:11:00,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:11:00,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1151378409, now seen corresponding path program 1 times [2020-09-25 09:11:00,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:11:00,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243460335] [2020-09-25 09:11:00,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:11:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:00,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:00,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:01,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:01,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 09:11:01,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:11:01,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 672 [2020-09-25 09:11:01,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:01,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:01,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:11:01,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:11:01,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 09:11:01,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:01,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:11:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:01,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:01,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:01,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:11:01,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:01,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:11:01,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:01,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:01,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:11:01,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:01,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:11:01,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 09:11:01,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:11:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:01,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:01,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:01,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:01,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:01,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 09:11:01,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:01,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:01,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:01,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:01,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:01,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:01,257 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:11:01,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243460335] [2020-09-25 09:11:01,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:11:01,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:11:01,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655293554] [2020-09-25 09:11:01,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:11:01,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:11:01,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:11:01,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:11:01,263 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 6 states. [2020-09-25 09:11:01,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:11:01,340 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2020-09-25 09:11:01,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:11:01,341 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-09-25 09:11:01,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:11:01,343 INFO L225 Difference]: With dead ends: 67 [2020-09-25 09:11:01,343 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 09:11:01,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:11:01,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 09:11:01,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2020-09-25 09:11:01,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 09:11:01,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2020-09-25 09:11:01,365 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 44 [2020-09-25 09:11:01,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:11:01,366 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2020-09-25 09:11:01,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:11:01,366 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2020-09-25 09:11:01,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 09:11:01,369 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:11:01,370 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:11:01,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:11:01,370 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:11:01,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:11:01,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1388174135, now seen corresponding path program 2 times [2020-09-25 09:11:01,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:11:01,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222711738] [2020-09-25 09:11:01,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:11:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:01,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:01,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:01,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:01,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 09:11:01,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:11:01,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-09-25 09:11:01,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:01,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:01,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:11:01,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 09:11:01,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 09:11:01,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:01,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:11:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:01,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:01,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:01,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:11:01,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:01,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:11:01,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:01,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:01,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:11:01,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:01,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:11:01,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:01,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:11:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:01,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:01,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:01,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:01,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:01,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 09:11:01,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:01,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:01,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:01,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:01,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:01,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:01,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 09:11:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:01,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:01,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:01,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:01,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:01,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 09:11:01,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:01,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:01,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:01,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:01,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:01,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:01,826 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 09:11:01,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222711738] [2020-09-25 09:11:01,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:11:01,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:11:01,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947852287] [2020-09-25 09:11:01,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:11:01,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:11:01,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:11:01,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:11:01,829 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand 8 states. [2020-09-25 09:11:02,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:11:02,061 INFO L93 Difference]: Finished difference Result 112 states and 121 transitions. [2020-09-25 09:11:02,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:11:02,061 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-09-25 09:11:02,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:11:02,063 INFO L225 Difference]: With dead ends: 112 [2020-09-25 09:11:02,063 INFO L226 Difference]: Without dead ends: 85 [2020-09-25 09:11:02,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:11:02,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-09-25 09:11:02,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 66. [2020-09-25 09:11:02,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-25 09:11:02,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2020-09-25 09:11:02,075 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 54 [2020-09-25 09:11:02,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:11:02,075 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2020-09-25 09:11:02,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:11:02,076 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2020-09-25 09:11:02,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 09:11:02,077 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:11:02,077 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:11:02,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:11:02,078 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:11:02,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:11:02,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1511501119, now seen corresponding path program 3 times [2020-09-25 09:11:02,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:11:02,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535608012] [2020-09-25 09:11:02,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:11:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:02,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:02,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:02,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:02,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 09:11:02,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:11:02,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 883 [2020-09-25 09:11:02,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:02,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:02,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:11:02,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:11:02,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 09:11:02,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:03,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:11:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:03,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:03,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:03,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:11:03,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:03,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:11:03,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:03,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:03,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:11:03,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:03,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:11:03,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:03,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 09:11:03,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:03,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:03,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:03,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:03,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:03,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:11:03,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:03,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:03,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:03,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:03,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:03,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:03,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 09:11:03,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:03,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:03,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:03,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:03,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:03,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:11:03,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:03,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:03,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:03,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:03,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:03,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:03,080 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 09:11:03,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535608012] [2020-09-25 09:11:03,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:11:03,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:11:03,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771995266] [2020-09-25 09:11:03,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:11:03,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:11:03,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:11:03,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:11:03,083 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand 7 states. [2020-09-25 09:11:03,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:11:03,145 INFO L93 Difference]: Finished difference Result 83 states and 86 transitions. [2020-09-25 09:11:03,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:11:03,146 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2020-09-25 09:11:03,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:11:03,147 INFO L225 Difference]: With dead ends: 83 [2020-09-25 09:11:03,148 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 09:11:03,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:11:03,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 09:11:03,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2020-09-25 09:11:03,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 09:11:03,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2020-09-25 09:11:03,158 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 60 [2020-09-25 09:11:03,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:11:03,158 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2020-09-25 09:11:03,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:11:03,159 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2020-09-25 09:11:03,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 09:11:03,160 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:11:03,160 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:11:03,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:11:03,160 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:11:03,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:11:03,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1318170893, now seen corresponding path program 4 times [2020-09-25 09:11:03,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:11:03,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204873087] [2020-09-25 09:11:03,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:11:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:03,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:03,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:03,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:03,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:11:03,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:11:03,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 512 [2020-09-25 09:11:03,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:03,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:03,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 09:11:03,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 09:11:03,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 09:11:03,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:03,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:11:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:03,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:03,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:03,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:11:03,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:03,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:11:03,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:03,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:03,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:11:03,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:03,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:11:03,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:03,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 09:11:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:03,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:03,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:03,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:03,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:03,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 09:11:03,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:03,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:03,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:03,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:03,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:03,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:03,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 09:11:03,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:03,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:03,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:03,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:03,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:03,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:11:03,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:03,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:03,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:03,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:03,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:03,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:03,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 09:11:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:03,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:03,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:03,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:03,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:03,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:11:03,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:03,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:03,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:03,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:03,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:03,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:03,839 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 09:11:03,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204873087] [2020-09-25 09:11:03,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:11:03,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:11:03,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198725364] [2020-09-25 09:11:03,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:11:03,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:11:03,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:11:03,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:11:03,842 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand 10 states. [2020-09-25 09:11:04,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:11:04,123 INFO L93 Difference]: Finished difference Result 142 states and 154 transitions. [2020-09-25 09:11:04,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:11:04,124 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-09-25 09:11:04,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:11:04,126 INFO L225 Difference]: With dead ends: 142 [2020-09-25 09:11:04,127 INFO L226 Difference]: Without dead ends: 109 [2020-09-25 09:11:04,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-09-25 09:11:04,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-25 09:11:04,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 82. [2020-09-25 09:11:04,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-25 09:11:04,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 85 transitions. [2020-09-25 09:11:04,138 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 85 transitions. Word has length 70 [2020-09-25 09:11:04,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:11:04,138 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 85 transitions. [2020-09-25 09:11:04,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:11:04,139 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 85 transitions. [2020-09-25 09:11:04,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 09:11:04,140 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:11:04,140 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:11:04,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 09:11:04,141 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:11:04,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:11:04,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1633055509, now seen corresponding path program 5 times [2020-09-25 09:11:04,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:11:04,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323246897] [2020-09-25 09:11:04,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:11:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:04,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:04,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:05,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:05,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 09:11:05,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:11:05,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1762 [2020-09-25 09:11:05,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:05,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:05,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 09:11:05,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:11:05,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 09:11:05,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:05,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:11:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:05,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:05,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:05,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:11:05,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:05,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:11:05,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:05,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:05,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:11:05,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:05,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:11:05,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:05,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 09:11:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:06,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:06,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:06,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:06,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:06,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:06,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:06,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:06,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:06,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:06,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:06,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:06,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 09:11:06,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:06,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:06,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:06,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:06,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:06,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:11:06,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:06,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:06,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:06,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:06,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:06,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:06,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-25 09:11:06,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:06,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:06,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:06,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:06,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:06,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:11:06,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:06,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:06,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:06,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:06,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:06,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:06,045 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 30 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 09:11:06,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323246897] [2020-09-25 09:11:06,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:11:06,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:11:06,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964721694] [2020-09-25 09:11:06,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:11:06,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:11:06,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:11:06,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:11:06,047 INFO L87 Difference]: Start difference. First operand 82 states and 85 transitions. Second operand 8 states. [2020-09-25 09:11:06,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:11:06,117 INFO L93 Difference]: Finished difference Result 99 states and 102 transitions. [2020-09-25 09:11:06,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 09:11:06,118 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 76 [2020-09-25 09:11:06,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:11:06,119 INFO L225 Difference]: With dead ends: 99 [2020-09-25 09:11:06,119 INFO L226 Difference]: Without dead ends: 97 [2020-09-25 09:11:06,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:11:06,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-09-25 09:11:06,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 92. [2020-09-25 09:11:06,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-25 09:11:06,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 95 transitions. [2020-09-25 09:11:06,128 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 95 transitions. Word has length 76 [2020-09-25 09:11:06,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:11:06,129 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 95 transitions. [2020-09-25 09:11:06,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:11:06,129 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 95 transitions. [2020-09-25 09:11:06,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 09:11:06,130 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:11:06,131 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:11:06,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 09:11:06,131 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:11:06,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:11:06,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1426826083, now seen corresponding path program 6 times [2020-09-25 09:11:06,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:11:06,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000811785] [2020-09-25 09:11:06,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:11:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:06,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:06,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:06,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:06,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-09-25 09:11:06,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:11:06,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 412 [2020-09-25 09:11:06,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:06,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:06,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 09:11:06,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 09:11:06,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 09:11:06,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:06,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:11:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:06,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:06,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:06,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:11:06,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:06,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:11:06,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:06,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:06,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:11:06,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:06,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:11:06,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:06,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 09:11:06,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:06,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:06,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:06,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:06,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:06,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:11:06,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:06,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:06,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:06,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:06,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:06,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:06,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 09:11:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:06,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:06,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:06,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:06,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:06,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 09:11:06,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:06,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:06,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:06,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:06,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:06,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:06,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-25 09:11:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:06,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:06,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:06,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:06,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:06,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:11:06,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:06,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:06,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:06,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:06,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:06,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:06,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-25 09:11:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:06,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:06,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:06,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:06,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:06,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:11:06,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:06,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:06,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:06,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:06,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:06,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:06,778 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 52 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 09:11:06,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000811785] [2020-09-25 09:11:06,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:11:06,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 09:11:06,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477374642] [2020-09-25 09:11:06,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 09:11:06,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:11:06,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 09:11:06,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:11:06,787 INFO L87 Difference]: Start difference. First operand 92 states and 95 transitions. Second operand 12 states. [2020-09-25 09:11:07,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:11:07,141 INFO L93 Difference]: Finished difference Result 172 states and 187 transitions. [2020-09-25 09:11:07,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:11:07,142 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 86 [2020-09-25 09:11:07,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:11:07,145 INFO L225 Difference]: With dead ends: 172 [2020-09-25 09:11:07,145 INFO L226 Difference]: Without dead ends: 133 [2020-09-25 09:11:07,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-09-25 09:11:07,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-09-25 09:11:07,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 98. [2020-09-25 09:11:07,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-25 09:11:07,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2020-09-25 09:11:07,168 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 86 [2020-09-25 09:11:07,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:11:07,168 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2020-09-25 09:11:07,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 09:11:07,168 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2020-09-25 09:11:07,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-09-25 09:11:07,176 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:11:07,176 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:11:07,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 09:11:07,183 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:11:07,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:11:07,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1621404309, now seen corresponding path program 7 times [2020-09-25 09:11:07,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:11:07,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580767612] [2020-09-25 09:11:07,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:11:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:07,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:07,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:09,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:09,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-09-25 09:11:09,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:11:09,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2588 [2020-09-25 09:11:09,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:09,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:09,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 09:11:09,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:11:09,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 09:11:09,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:09,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:11:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:09,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:09,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:09,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:11:09,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:09,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:11:09,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:09,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:09,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:11:09,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:09,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:11:09,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:09,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 09:11:09,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:09,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:09,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:09,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:09,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:09,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:11:09,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:09,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:09,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:09,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:09,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:09,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:09,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 09:11:09,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:09,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:09,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:09,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:09,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:09,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:11:09,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:09,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:09,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:09,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:09,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:09,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:09,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 09:11:09,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:09,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:09,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:09,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:09,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:09,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 09:11:09,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:09,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:09,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:09,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:09,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:09,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:09,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-25 09:11:09,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:09,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:09,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:09,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:09,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:09,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:11:09,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:09,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:09,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:09,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:09,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:09,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:09,959 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 52 proven. 44 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 09:11:09,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580767612] [2020-09-25 09:11:09,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:11:09,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 09:11:09,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951822439] [2020-09-25 09:11:09,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 09:11:09,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:11:09,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 09:11:09,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:11:09,962 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand 9 states. [2020-09-25 09:11:10,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:11:10,035 INFO L93 Difference]: Finished difference Result 115 states and 118 transitions. [2020-09-25 09:11:10,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 09:11:10,036 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-09-25 09:11:10,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:11:10,037 INFO L225 Difference]: With dead ends: 115 [2020-09-25 09:11:10,037 INFO L226 Difference]: Without dead ends: 113 [2020-09-25 09:11:10,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:11:10,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-09-25 09:11:10,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 108. [2020-09-25 09:11:10,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-25 09:11:10,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 111 transitions. [2020-09-25 09:11:10,045 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 111 transitions. Word has length 92 [2020-09-25 09:11:10,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:11:10,046 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 111 transitions. [2020-09-25 09:11:10,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 09:11:10,046 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 111 transitions. [2020-09-25 09:11:10,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-25 09:11:10,047 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:11:10,047 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:11:10,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 09:11:10,048 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:11:10,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:11:10,048 INFO L82 PathProgramCache]: Analyzing trace with hash -927854023, now seen corresponding path program 8 times [2020-09-25 09:11:10,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:11:10,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184712224] [2020-09-25 09:11:10,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:11:10,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:10,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:10,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:11,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:11,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 09:11:11,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:11:11,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1037 [2020-09-25 09:11:11,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:11,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:11,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 09:11:11,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 09:11:11,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-09-25 09:11:11,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:11,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:11:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:11,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:11,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:11,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:11:11,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:11,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:11:11,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:11,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:11,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:11:11,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:11,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:11:11,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:11,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 09:11:11,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:11,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:11,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:11,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:11,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:11,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:11,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:11,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:11,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:11,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:11,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:11,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:11,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 09:11:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:11,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:11,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:11,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:11,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:11,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:11:11,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:11,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:11,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:11,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:11,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:11,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:11,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 09:11:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:11,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:11,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:11,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:11,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:11,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:11,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:11,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:11,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:11,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:11,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:11,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:11,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-25 09:11:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:11,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:11,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:11,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:11,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:11,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:11:11,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:11,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:11,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:11,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:11,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:11,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:11,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 09:11:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:11,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:11,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:11,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:11,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:11,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:11:11,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:11,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:11,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:11,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:11,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:11,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:11,310 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 80 proven. 44 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 09:11:11,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184712224] [2020-09-25 09:11:11,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:11:11,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 09:11:11,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941969682] [2020-09-25 09:11:11,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 09:11:11,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:11:11,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 09:11:11,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-09-25 09:11:11,313 INFO L87 Difference]: Start difference. First operand 108 states and 111 transitions. Second operand 14 states. [2020-09-25 09:11:11,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:11:11,667 INFO L93 Difference]: Finished difference Result 202 states and 220 transitions. [2020-09-25 09:11:11,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 09:11:11,667 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 102 [2020-09-25 09:11:11,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:11:11,669 INFO L225 Difference]: With dead ends: 202 [2020-09-25 09:11:11,669 INFO L226 Difference]: Without dead ends: 157 [2020-09-25 09:11:11,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2020-09-25 09:11:11,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-09-25 09:11:11,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 114. [2020-09-25 09:11:11,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-25 09:11:11,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 117 transitions. [2020-09-25 09:11:11,684 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 117 transitions. Word has length 102 [2020-09-25 09:11:11,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:11:11,686 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 117 transitions. [2020-09-25 09:11:11,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 09:11:11,686 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 117 transitions. [2020-09-25 09:11:11,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-25 09:11:11,689 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:11:11,689 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:11:11,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 09:11:11,689 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:11:11,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:11:11,690 INFO L82 PathProgramCache]: Analyzing trace with hash 917288001, now seen corresponding path program 9 times [2020-09-25 09:11:11,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:11:11,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963111285] [2020-09-25 09:11:11,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:11:11,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:11,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:11,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:15,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:15,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-09-25 09:11:15,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:11:15,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3796 [2020-09-25 09:11:15,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:15,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:15,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 09:11:15,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:11:15,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-25 09:11:15,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:15,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:11:15,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:15,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:15,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:15,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:11:15,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:15,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:11:15,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:15,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:15,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:11:15,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:15,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:11:15,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:15,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 09:11:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:15,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:15,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:15,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:15,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:15,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:11:15,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:15,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:15,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:15,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:15,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:15,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:15,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-25 09:11:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:15,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:15,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:15,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:15,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:15,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:15,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:15,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:15,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:15,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:15,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:15,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:15,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 09:11:15,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:15,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:15,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:15,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:15,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:15,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:11:15,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:15,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:15,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:15,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:15,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:15,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:15,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 09:11:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:15,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:15,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:15,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:15,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:15,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:11:15,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:15,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:15,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:15,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:15,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:15,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:15,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-25 09:11:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:15,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:15,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:15,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:15,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:15,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:11:15,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:15,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:15,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:15,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:15,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:15,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:15,704 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 80 proven. 70 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 09:11:15,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963111285] [2020-09-25 09:11:15,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:11:15,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:11:15,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922675177] [2020-09-25 09:11:15,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:11:15,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:11:15,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:11:15,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:11:15,707 INFO L87 Difference]: Start difference. First operand 114 states and 117 transitions. Second operand 10 states. [2020-09-25 09:11:15,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:11:15,808 INFO L93 Difference]: Finished difference Result 131 states and 134 transitions. [2020-09-25 09:11:15,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:11:15,808 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 108 [2020-09-25 09:11:15,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:11:15,810 INFO L225 Difference]: With dead ends: 131 [2020-09-25 09:11:15,811 INFO L226 Difference]: Without dead ends: 129 [2020-09-25 09:11:15,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:11:15,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-09-25 09:11:15,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 124. [2020-09-25 09:11:15,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-09-25 09:11:15,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 127 transitions. [2020-09-25 09:11:15,820 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 127 transitions. Word has length 108 [2020-09-25 09:11:15,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:11:15,820 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 127 transitions. [2020-09-25 09:11:15,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:11:15,821 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 127 transitions. [2020-09-25 09:11:15,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-09-25 09:11:15,822 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:11:15,822 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:11:15,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 09:11:15,823 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:11:15,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:11:15,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1617732209, now seen corresponding path program 10 times [2020-09-25 09:11:15,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:11:15,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974449809] [2020-09-25 09:11:15,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:11:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:15,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:16,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:16,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:16,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 09:11:16,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:11:16,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 756 [2020-09-25 09:11:16,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:16,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:16,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 09:11:16,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 09:11:16,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 09:11:16,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:16,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:11:16,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:16,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:16,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:16,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:11:16,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:16,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:11:16,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:16,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:16,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:11:16,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:16,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:11:16,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:16,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 09:11:16,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:16,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:16,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:16,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:16,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:16,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:11:16,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:16,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:16,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:16,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:16,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:16,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:16,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-25 09:11:16,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:16,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:16,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:16,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:16,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:16,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:11:16,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:16,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:16,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:16,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:16,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:16,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:16,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 09:11:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:16,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:16,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:16,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:16,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:16,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:16,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:16,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:16,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:16,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:16,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:16,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:16,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 09:11:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:16,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:16,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:16,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:16,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:16,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:11:16,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:16,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:16,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:16,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:16,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:16,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:16,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-25 09:11:16,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:16,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:16,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:16,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:16,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:16,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:11:16,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:16,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:16,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:16,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:16,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:16,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:16,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 09:11:16,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:16,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:16,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:16,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:16,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:16,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:11:16,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:16,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:16,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:16,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:16,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:16,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:16,864 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 114 proven. 70 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-25 09:11:16,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974449809] [2020-09-25 09:11:16,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:11:16,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 09:11:16,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474533295] [2020-09-25 09:11:16,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 09:11:16,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:11:16,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 09:11:16,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 09:11:16,869 INFO L87 Difference]: Start difference. First operand 124 states and 127 transitions. Second operand 16 states. [2020-09-25 09:11:17,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:11:17,300 INFO L93 Difference]: Finished difference Result 232 states and 253 transitions. [2020-09-25 09:11:17,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 09:11:17,301 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 118 [2020-09-25 09:11:17,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:11:17,302 INFO L225 Difference]: With dead ends: 232 [2020-09-25 09:11:17,303 INFO L226 Difference]: Without dead ends: 181 [2020-09-25 09:11:17,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=245, Invalid=511, Unknown=0, NotChecked=0, Total=756 [2020-09-25 09:11:17,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-09-25 09:11:17,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 130. [2020-09-25 09:11:17,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-09-25 09:11:17,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 133 transitions. [2020-09-25 09:11:17,315 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 133 transitions. Word has length 118 [2020-09-25 09:11:17,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:11:17,315 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 133 transitions. [2020-09-25 09:11:17,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 09:11:17,315 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 133 transitions. [2020-09-25 09:11:17,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-09-25 09:11:17,317 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:11:17,317 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:11:17,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 09:11:17,317 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:11:17,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:11:17,318 INFO L82 PathProgramCache]: Analyzing trace with hash -581374057, now seen corresponding path program 11 times [2020-09-25 09:11:17,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:11:17,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10234358] [2020-09-25 09:11:17,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:11:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:17,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:17,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:22,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:22,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 09:11:22,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:11:22,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 09:11:22,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:22,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:22,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 09:11:22,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:11:22,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 09:11:22,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:22,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:11:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:22,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:22,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:22,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:11:22,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:22,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:11:22,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:22,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:22,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:11:22,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:22,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:11:22,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:22,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 09:11:22,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:22,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:22,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:22,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:22,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:22,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:22,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:22,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:22,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:22,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:22,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:22,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:22,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 09:11:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:22,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:22,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:22,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:22,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:22,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:22,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:22,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:22,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:22,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:22,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:22,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:22,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-25 09:11:22,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:22,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:22,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:22,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:22,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:22,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:11:22,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:22,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:22,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:22,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:22,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:22,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:22,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 09:11:22,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:22,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:22,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:22,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:22,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:22,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:22,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:22,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:22,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:22,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:22,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:22,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:22,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 09:11:22,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:22,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:22,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:22,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:22,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:22,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:11:22,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:22,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:22,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:22,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:22,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:22,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:22,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 09:11:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:22,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:22,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:22,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:22,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:22,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:11:22,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:22,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:22,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:22,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:22,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:22,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:22,590 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 114 proven. 102 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-25 09:11:22,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10234358] [2020-09-25 09:11:22,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:11:22,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 09:11:22,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642672740] [2020-09-25 09:11:22,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 09:11:22,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:11:22,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 09:11:22,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:11:22,593 INFO L87 Difference]: Start difference. First operand 130 states and 133 transitions. Second operand 11 states. [2020-09-25 09:11:22,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:11:22,686 INFO L93 Difference]: Finished difference Result 147 states and 150 transitions. [2020-09-25 09:11:22,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:11:22,686 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 124 [2020-09-25 09:11:22,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:11:22,688 INFO L225 Difference]: With dead ends: 147 [2020-09-25 09:11:22,688 INFO L226 Difference]: Without dead ends: 145 [2020-09-25 09:11:22,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:11:22,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-09-25 09:11:22,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 140. [2020-09-25 09:11:22,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-25 09:11:22,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 143 transitions. [2020-09-25 09:11:22,697 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 143 transitions. Word has length 124 [2020-09-25 09:11:22,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:11:22,698 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 143 transitions. [2020-09-25 09:11:22,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 09:11:22,698 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 143 transitions. [2020-09-25 09:11:22,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 09:11:22,699 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:11:22,700 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:11:22,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 09:11:22,700 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:11:22,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:11:22,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1723472539, now seen corresponding path program 12 times [2020-09-25 09:11:22,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:11:22,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80000457] [2020-09-25 09:11:22,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:11:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:22,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:22,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:24,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:24,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 09:11:24,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:11:24,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1828 [2020-09-25 09:11:24,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:24,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:24,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 09:11:24,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 09:11:24,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 09:11:24,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:24,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:11:24,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:24,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:24,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:24,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:11:24,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:24,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:11:24,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:24,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:24,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:11:24,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:24,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:11:24,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:24,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 09:11:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:24,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:24,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:24,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:24,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:24,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:11:24,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:24,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:24,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:24,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:24,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:24,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:24,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 09:11:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:24,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:24,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:24,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:24,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:24,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:11:24,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:24,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:24,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:24,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:24,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:24,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:24,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-25 09:11:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:24,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:24,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:24,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:24,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:24,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:11:24,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:24,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:24,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:24,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:24,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:24,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:24,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 09:11:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:24,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:24,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:24,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:24,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:24,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:11:24,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:24,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:24,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:24,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:24,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:24,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:24,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 09:11:24,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:24,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:24,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:24,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:24,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:24,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:24,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:24,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:24,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:24,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:24,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:24,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:24,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 09:11:24,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:24,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:24,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:24,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:24,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:24,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:11:24,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:24,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:24,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:24,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:24,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:24,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:24,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-25 09:11:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:24,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:24,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:24,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:24,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:24,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:11:24,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:24,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:24,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:24,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:24,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:24,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:24,882 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 154 proven. 102 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-09-25 09:11:24,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80000457] [2020-09-25 09:11:24,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:11:24,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 09:11:24,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347530467] [2020-09-25 09:11:24,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 09:11:24,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:11:24,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 09:11:24,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-09-25 09:11:24,886 INFO L87 Difference]: Start difference. First operand 140 states and 143 transitions. Second operand 18 states. [2020-09-25 09:11:25,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:11:25,375 INFO L93 Difference]: Finished difference Result 262 states and 286 transitions. [2020-09-25 09:11:25,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 09:11:25,376 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 134 [2020-09-25 09:11:25,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:11:25,378 INFO L225 Difference]: With dead ends: 262 [2020-09-25 09:11:25,378 INFO L226 Difference]: Without dead ends: 205 [2020-09-25 09:11:25,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=320, Invalid=672, Unknown=0, NotChecked=0, Total=992 [2020-09-25 09:11:25,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-09-25 09:11:25,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 146. [2020-09-25 09:11:25,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-25 09:11:25,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 149 transitions. [2020-09-25 09:11:25,388 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 149 transitions. Word has length 134 [2020-09-25 09:11:25,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:11:25,388 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 149 transitions. [2020-09-25 09:11:25,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 09:11:25,388 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 149 transitions. [2020-09-25 09:11:25,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 09:11:25,390 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:11:25,390 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:11:25,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 09:11:25,390 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:11:25,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:11:25,391 INFO L82 PathProgramCache]: Analyzing trace with hash 318138221, now seen corresponding path program 13 times [2020-09-25 09:11:25,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:11:25,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781098737] [2020-09-25 09:11:25,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:11:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:25,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:25,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:30,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:30,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 09:11:30,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:11:30,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 09:11:30,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:30,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:30,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 09:11:30,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:11:30,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 09:11:30,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:30,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:11:30,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:30,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:30,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:30,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:11:30,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:30,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:11:30,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:30,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:30,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:11:30,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:30,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:11:30,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:30,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 09:11:30,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:30,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:30,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:30,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:30,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:30,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:30,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:30,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:30,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:30,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:30,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:30,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:30,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 09:11:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:30,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:30,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:30,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:30,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:30,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:30,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:30,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:30,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:30,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:30,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:30,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:30,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 09:11:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:30,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:30,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:30,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:30,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:30,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:30,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:30,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:30,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:30,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:30,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:30,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:30,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-25 09:11:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:30,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:30,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:30,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:30,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:30,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:11:30,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:30,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:30,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:30,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:30,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:30,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:30,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-25 09:11:30,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:30,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:30,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:30,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:30,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:30,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:30,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:30,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:30,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:30,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:30,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:30,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:30,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-25 09:11:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:30,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:30,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:30,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:30,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:30,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:30,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:30,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:30,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:30,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:30,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:30,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:30,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-25 09:11:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:30,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:30,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:30,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:30,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:30,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:30,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:30,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:30,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:30,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:30,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:30,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:30,640 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 154 proven. 140 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-09-25 09:11:30,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781098737] [2020-09-25 09:11:30,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:11:30,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 09:11:30,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267319] [2020-09-25 09:11:30,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 09:11:30,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:11:30,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 09:11:30,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:11:30,642 INFO L87 Difference]: Start difference. First operand 146 states and 149 transitions. Second operand 12 states. [2020-09-25 09:11:30,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:11:30,747 INFO L93 Difference]: Finished difference Result 163 states and 166 transitions. [2020-09-25 09:11:30,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 09:11:30,748 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 140 [2020-09-25 09:11:30,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:11:30,749 INFO L225 Difference]: With dead ends: 163 [2020-09-25 09:11:30,750 INFO L226 Difference]: Without dead ends: 161 [2020-09-25 09:11:30,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-09-25 09:11:30,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-09-25 09:11:30,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 156. [2020-09-25 09:11:30,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-09-25 09:11:30,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 159 transitions. [2020-09-25 09:11:30,759 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 159 transitions. Word has length 140 [2020-09-25 09:11:30,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:11:30,759 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 159 transitions. [2020-09-25 09:11:30,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 09:11:30,759 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 159 transitions. [2020-09-25 09:11:30,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 09:11:30,761 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:11:30,761 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:11:30,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 09:11:30,761 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:11:30,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:11:30,762 INFO L82 PathProgramCache]: Analyzing trace with hash -186119749, now seen corresponding path program 14 times [2020-09-25 09:11:30,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:11:30,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182811089] [2020-09-25 09:11:30,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:11:30,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:30,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:30,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:32,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:32,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 09:11:32,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:11:32,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2149 [2020-09-25 09:11:32,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:32,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:32,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 09:11:32,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 09:11:32,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 09:11:32,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:33,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:11:33,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:33,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:33,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:33,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:11:33,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:33,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:11:33,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:33,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:33,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:11:33,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:33,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:11:33,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:33,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 09:11:33,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:33,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:33,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:33,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:33,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:33,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:33,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:33,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:33,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:33,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:33,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:33,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:33,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 09:11:33,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:33,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:33,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:33,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:33,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:33,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:33,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:33,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:33,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:33,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:33,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:33,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:33,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 09:11:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:33,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:33,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:33,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:33,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:33,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:33,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:33,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:33,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:33,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:33,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:33,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:33,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-25 09:11:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:33,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:33,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:33,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:33,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:33,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:11:33,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:33,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:33,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:33,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:33,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:33,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:33,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-25 09:11:33,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:33,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:33,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:33,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:33,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:33,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:11:33,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:33,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:33,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:33,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:33,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:33,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:33,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-25 09:11:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:33,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:33,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:33,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:33,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:33,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:33,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:33,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:33,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:33,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:33,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:33,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:33,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-25 09:11:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:33,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:33,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:33,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:33,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:33,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:33,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:33,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:33,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:33,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:33,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:33,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:33,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-25 09:11:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:33,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:33,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:33,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:33,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:33,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:33,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:33,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:33,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:33,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:33,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:33,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:33,306 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 200 proven. 140 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-09-25 09:11:33,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182811089] [2020-09-25 09:11:33,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:11:33,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 09:11:33,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4647430] [2020-09-25 09:11:33,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 09:11:33,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:11:33,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 09:11:33,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-09-25 09:11:33,309 INFO L87 Difference]: Start difference. First operand 156 states and 159 transitions. Second operand 20 states. [2020-09-25 09:11:34,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:11:34,004 INFO L93 Difference]: Finished difference Result 292 states and 319 transitions. [2020-09-25 09:11:34,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-25 09:11:34,006 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 150 [2020-09-25 09:11:34,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:11:34,008 INFO L225 Difference]: With dead ends: 292 [2020-09-25 09:11:34,008 INFO L226 Difference]: Without dead ends: 229 [2020-09-25 09:11:34,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=405, Invalid=855, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 09:11:34,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-09-25 09:11:34,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 162. [2020-09-25 09:11:34,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-25 09:11:34,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 165 transitions. [2020-09-25 09:11:34,025 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 165 transitions. Word has length 150 [2020-09-25 09:11:34,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:11:34,025 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 165 transitions. [2020-09-25 09:11:34,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-25 09:11:34,026 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 165 transitions. [2020-09-25 09:11:34,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 09:11:34,027 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:11:34,028 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:11:34,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 09:11:34,028 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:11:34,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:11:34,028 INFO L82 PathProgramCache]: Analyzing trace with hash -693929021, now seen corresponding path program 15 times [2020-09-25 09:11:34,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:11:34,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283400662] [2020-09-25 09:11:34,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:11:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:34,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:34,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:39,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:39,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 09:11:39,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:11:39,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 09:11:39,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:39,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:39,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 09:11:39,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:11:39,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-09-25 09:11:39,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:39,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:11:39,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:39,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:39,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:39,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:11:39,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:39,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:11:39,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:39,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:39,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:11:39,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:39,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:11:39,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:39,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-25 09:11:39,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:39,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:39,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:39,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:39,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:39,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:11:39,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:39,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:39,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:39,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:39,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:39,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:39,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-25 09:11:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:39,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:39,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:39,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:39,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:39,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:39,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:39,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:39,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:39,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:39,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:39,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:39,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-25 09:11:39,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:39,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:39,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:39,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:39,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:39,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:39,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:39,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:39,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:39,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:39,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:39,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:39,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-09-25 09:11:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:39,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:39,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:39,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:39,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:39,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:39,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:39,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:39,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:39,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:39,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:39,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:39,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-25 09:11:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:39,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:39,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:39,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:39,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:39,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:39,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:39,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:39,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:39,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:39,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:39,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:39,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-25 09:11:39,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:39,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:39,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:39,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:39,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:39,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:39,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:39,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:39,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:39,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:39,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:39,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:11:39,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-25 09:11:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:39,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:39,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:39,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:39,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:39,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:11:39,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:39,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:39,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:39,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:39,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:39,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:39,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-25 09:11:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:39,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:39,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:39,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:39,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:39,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:39,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:39,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:39,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:39,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:39,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:39,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:39,273 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 200 proven. 184 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-09-25 09:11:39,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283400662] [2020-09-25 09:11:39,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:11:39,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 09:11:39,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526423238] [2020-09-25 09:11:39,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 09:11:39,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:11:39,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 09:11:39,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-09-25 09:11:39,282 INFO L87 Difference]: Start difference. First operand 162 states and 165 transitions. Second operand 13 states. [2020-09-25 09:11:39,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:11:39,403 INFO L93 Difference]: Finished difference Result 179 states and 182 transitions. [2020-09-25 09:11:39,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:11:39,403 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 156 [2020-09-25 09:11:39,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:11:39,406 INFO L225 Difference]: With dead ends: 179 [2020-09-25 09:11:39,406 INFO L226 Difference]: Without dead ends: 177 [2020-09-25 09:11:39,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-09-25 09:11:39,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-09-25 09:11:39,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 172. [2020-09-25 09:11:39,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-09-25 09:11:39,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 175 transitions. [2020-09-25 09:11:39,414 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 175 transitions. Word has length 156 [2020-09-25 09:11:39,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:11:39,415 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 175 transitions. [2020-09-25 09:11:39,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 09:11:39,415 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 175 transitions. [2020-09-25 09:11:39,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 09:11:39,417 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:11:39,417 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:11:39,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 09:11:39,418 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:11:39,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:11:39,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1491064175, now seen corresponding path program 16 times [2020-09-25 09:11:39,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:11:39,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590271482] [2020-09-25 09:11:39,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:11:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:39,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:40,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:40,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:40,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 09:11:40,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:11:40,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1536 [2020-09-25 09:11:40,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:40,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:40,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 09:11:40,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 09:11:40,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-09-25 09:11:40,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:41,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:11:41,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:41,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:41,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:41,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:11:41,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:41,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:11:41,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:41,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:41,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:11:41,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:41,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:11:41,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:41,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-25 09:11:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:41,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:41,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:41,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:41,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:41,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:41,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:41,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:41,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:41,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:41,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:41,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:41,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-25 09:11:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:41,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:41,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:41,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:41,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:41,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:41,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:41,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:41,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:41,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:41,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:41,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:41,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-25 09:11:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:41,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:41,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:41,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:41,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:41,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:11:41,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:41,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:41,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:41,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:41,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:41,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:41,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-09-25 09:11:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:41,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:41,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:41,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:41,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:41,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:11:41,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:41,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:41,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:41,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:41,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:41,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:41,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-25 09:11:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:41,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:41,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:41,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:41,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:41,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:11:41,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:41,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:41,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:41,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:41,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:41,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:41,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-25 09:11:41,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:41,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:41,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:41,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:41,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:41,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:11:41,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:41,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:41,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:41,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:41,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:41,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:41,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-25 09:11:41,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:41,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:41,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:41,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:41,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:41,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:11:41,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:41,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:41,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:41,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:41,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:41,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:41,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-25 09:11:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:41,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:41,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:41,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:41,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:41,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:11:41,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:41,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:41,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:41,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:41,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:41,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:41,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-09-25 09:11:41,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:41,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:41,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:41,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:41,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:41,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:41,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:41,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:41,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:41,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:41,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:41,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:41,400 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 252 proven. 184 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-09-25 09:11:41,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590271482] [2020-09-25 09:11:41,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:11:41,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-25 09:11:41,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757401543] [2020-09-25 09:11:41,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-25 09:11:41,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:11:41,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-25 09:11:41,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2020-09-25 09:11:41,402 INFO L87 Difference]: Start difference. First operand 172 states and 175 transitions. Second operand 22 states. [2020-09-25 09:11:42,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:11:42,247 INFO L93 Difference]: Finished difference Result 322 states and 352 transitions. [2020-09-25 09:11:42,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-25 09:11:42,250 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 166 [2020-09-25 09:11:42,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:11:42,252 INFO L225 Difference]: With dead ends: 322 [2020-09-25 09:11:42,252 INFO L226 Difference]: Without dead ends: 253 [2020-09-25 09:11:42,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=500, Invalid=1060, Unknown=0, NotChecked=0, Total=1560 [2020-09-25 09:11:42,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-09-25 09:11:42,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 178. [2020-09-25 09:11:42,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-09-25 09:11:42,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 181 transitions. [2020-09-25 09:11:42,263 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 181 transitions. Word has length 166 [2020-09-25 09:11:42,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:11:42,263 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 181 transitions. [2020-09-25 09:11:42,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-25 09:11:42,263 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 181 transitions. [2020-09-25 09:11:42,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 09:11:42,265 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:11:42,265 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:11:42,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-25 09:11:42,266 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:11:42,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:11:42,266 INFO L82 PathProgramCache]: Analyzing trace with hash -586773351, now seen corresponding path program 17 times [2020-09-25 09:11:42,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:11:42,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961368558] [2020-09-25 09:11:42,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:11:42,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:42,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:42,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:47,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:47,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-25 09:11:47,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:11:47,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 09:11:47,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:47,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:47,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 09:11:47,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:11:47,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-09-25 09:11:47,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:47,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:11:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:47,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:47,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:47,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:11:47,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:47,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:11:47,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:47,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:47,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:11:47,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:47,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:11:47,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:47,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-25 09:11:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:47,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:47,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:47,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:47,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:47,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:11:47,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:47,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:47,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:47,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:47,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:47,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:47,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 09:11:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:47,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:47,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:47,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:47,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:47,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:47,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:47,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:47,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:47,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:47,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:47,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:47,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-09-25 09:11:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:47,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:47,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:47,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:47,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:47,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:47,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:47,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:47,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:47,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:47,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:47,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:11:47,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-09-25 09:11:47,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:47,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:47,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:47,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:47,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:47,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:47,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:47,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:47,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:47,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:47,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:47,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:47,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-25 09:11:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:47,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:47,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:47,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:47,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:47,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:11:47,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:47,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:47,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:47,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:47,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:47,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:47,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-25 09:11:47,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:47,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:47,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:47,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:47,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:47,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:11:47,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:47,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:47,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:47,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:47,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:47,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:47,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-25 09:11:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:47,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:47,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:47,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:47,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:47,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:11:47,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:47,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:47,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:47,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:47,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:47,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:47,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-25 09:11:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:47,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:47,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:47,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:47,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:47,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:11:47,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:47,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:47,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:47,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:47,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:47,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:47,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-09-25 09:11:47,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:47,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:47,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:47,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:47,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:47,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:11:47,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:47,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:47,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:47,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:47,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:47,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:47,561 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 252 proven. 234 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-09-25 09:11:47,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961368558] [2020-09-25 09:11:47,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:11:47,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 09:11:47,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457241062] [2020-09-25 09:11:47,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 09:11:47,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:11:47,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 09:11:47,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-09-25 09:11:47,562 INFO L87 Difference]: Start difference. First operand 178 states and 181 transitions. Second operand 14 states. [2020-09-25 09:11:47,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:11:47,693 INFO L93 Difference]: Finished difference Result 195 states and 198 transitions. [2020-09-25 09:11:47,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 09:11:47,694 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 172 [2020-09-25 09:11:47,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:11:47,696 INFO L225 Difference]: With dead ends: 195 [2020-09-25 09:11:47,696 INFO L226 Difference]: Without dead ends: 193 [2020-09-25 09:11:47,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-09-25 09:11:47,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-09-25 09:11:47,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 188. [2020-09-25 09:11:47,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-09-25 09:11:47,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 191 transitions. [2020-09-25 09:11:47,707 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 191 transitions. Word has length 172 [2020-09-25 09:11:47,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:11:47,707 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 191 transitions. [2020-09-25 09:11:47,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 09:11:47,708 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 191 transitions. [2020-09-25 09:11:47,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 09:11:47,710 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:11:47,710 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:11:47,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-25 09:11:47,711 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:11:47,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:11:47,711 INFO L82 PathProgramCache]: Analyzing trace with hash 270313447, now seen corresponding path program 18 times [2020-09-25 09:11:47,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:11:47,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190934944] [2020-09-25 09:11:47,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:11:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:47,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:48,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:49,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:49,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-09-25 09:11:49,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:11:49,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1729 [2020-09-25 09:11:49,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:49,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:49,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 09:11:49,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 09:11:49,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-09-25 09:11:49,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:49,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:11:49,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:49,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:49,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:49,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:11:49,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:49,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:11:49,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:49,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:49,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:11:49,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:49,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:11:49,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:49,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-25 09:11:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:49,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:49,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:49,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:49,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:49,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:49,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:49,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:49,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:49,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:49,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:49,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:49,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 09:11:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:49,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:49,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:49,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:49,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:49,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:11:49,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:49,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:49,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:49,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:49,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:49,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:49,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-09-25 09:11:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:49,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:49,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:49,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:49,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:49,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:11:49,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:49,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:49,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:49,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:49,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:49,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:49,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-09-25 09:11:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:49,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:49,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:49,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:49,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:49,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:49,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:49,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:49,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:49,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:49,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:49,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:49,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-25 09:11:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:49,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:49,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:49,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:49,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:49,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:11:49,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:49,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:49,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:49,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:49,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:49,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:49,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-25 09:11:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:49,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:49,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:49,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:49,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:49,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:49,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:49,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:49,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:49,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:49,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:49,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:49,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-25 09:11:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:49,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:49,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:49,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:49,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:49,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:11:49,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:49,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:49,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:49,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:49,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:49,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:49,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-25 09:11:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:49,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:49,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:49,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:49,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:49,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:11:49,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:49,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:49,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:49,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:49,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:49,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:49,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-09-25 09:11:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:49,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:49,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:49,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:49,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:49,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:11:49,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:49,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:49,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:49,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:49,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:49,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:49,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-09-25 09:11:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:49,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:49,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:11:49,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:11:49,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:11:49,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:11:49,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:11:49,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:11:49,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:11:49,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:11:49,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:11:49,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:11:49,930 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 310 proven. 234 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-09-25 09:11:49,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190934944] [2020-09-25 09:11:49,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:11:49,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-09-25 09:11:49,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487372020] [2020-09-25 09:11:49,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-25 09:11:49,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:11:49,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-25 09:11:49,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2020-09-25 09:11:49,932 INFO L87 Difference]: Start difference. First operand 188 states and 191 transitions. Second operand 24 states. [2020-09-25 09:11:50,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:11:50,830 INFO L93 Difference]: Finished difference Result 352 states and 385 transitions. [2020-09-25 09:11:50,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-25 09:11:50,831 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 182 [2020-09-25 09:11:50,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:11:50,833 INFO L225 Difference]: With dead ends: 352 [2020-09-25 09:11:50,833 INFO L226 Difference]: Without dead ends: 277 [2020-09-25 09:11:50,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=605, Invalid=1287, Unknown=0, NotChecked=0, Total=1892 [2020-09-25 09:11:50,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-09-25 09:11:50,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 194. [2020-09-25 09:11:50,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-09-25 09:11:50,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 197 transitions. [2020-09-25 09:11:50,845 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 197 transitions. Word has length 182 [2020-09-25 09:11:50,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:11:50,845 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 197 transitions. [2020-09-25 09:11:50,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-25 09:11:50,845 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 197 transitions. [2020-09-25 09:11:50,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-25 09:11:50,848 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:11:50,848 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:11:50,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-25 09:11:50,848 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:11:50,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:11:50,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1179515375, now seen corresponding path program 19 times [2020-09-25 09:11:50,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:11:50,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488390735] [2020-09-25 09:11:50,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:11:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:11:50,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:11:51,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking...