/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --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/SpamAssassin-loop.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:47:27,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:47:27,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:47:27,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:47:27,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:47:27,414 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:47:27,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:47:27,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:47:27,423 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:47:27,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:47:27,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:47:27,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:47:27,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:47:27,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:47:27,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:47:27,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:47:27,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:47:27,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:47:27,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:47:27,452 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:47:27,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:47:27,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:47:27,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:47:27,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:47:27,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:47:27,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:47:27,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:47:27,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:47:27,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:47:27,468 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:47:27,468 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:47:27,469 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:47:27,470 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:47:27,471 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:47:27,472 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:47:27,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:47:27,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:47:27,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:47:27,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:47:27,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:47:27,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:47:27,477 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 14:47:27,524 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:47:27,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:47:27,527 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:47:27,527 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:47:27,527 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:47:27,528 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:47:27,528 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:47:27,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:47:27,528 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:47:27,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:47:27,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:47:27,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:47:27,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:47:27,531 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:47:27,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:47:27,531 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:47:27,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:47:27,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:47:27,532 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:47:27,532 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:47:27,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:47:27,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:47:27,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:47:27,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:47:27,533 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:47:27,533 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:47:27,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:47:27,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:47:27,534 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:47:27,534 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:47:28,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:47:28,039 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:47:28,045 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:47:28,047 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:47:28,048 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:47:28,049 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i [2020-09-25 14:47:28,145 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3a4fdf88/008698b534d24ab9a7d0df5563875b80/FLAG0845f1549 [2020-09-25 14:47:28,714 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:47:28,715 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i [2020-09-25 14:47:28,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3a4fdf88/008698b534d24ab9a7d0df5563875b80/FLAG0845f1549 [2020-09-25 14:47:29,054 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3a4fdf88/008698b534d24ab9a7d0df5563875b80 [2020-09-25 14:47:29,071 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:47:29,078 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:47:29,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:47:29,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:47:29,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:47:29,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:47:29" (1/1) ... [2020-09-25 14:47:29,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6643fb7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:29, skipping insertion in model container [2020-09-25 14:47:29,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:47:29" (1/1) ... [2020-09-25 14:47:29,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:47:29,128 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:47:29,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:47:29,388 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:47:29,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:47:29,434 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:47:29,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:29 WrapperNode [2020-09-25 14:47:29,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:47:29,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:47:29,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:47:29,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:47:29,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:29" (1/1) ... [2020-09-25 14:47:29,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:29" (1/1) ... [2020-09-25 14:47:29,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:29" (1/1) ... [2020-09-25 14:47:29,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:29" (1/1) ... [2020-09-25 14:47:29,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:29" (1/1) ... [2020-09-25 14:47:29,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:29" (1/1) ... [2020-09-25 14:47:29,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:29" (1/1) ... [2020-09-25 14:47:29,574 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:47:29,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:47:29,575 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:47:29,575 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:47:29,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:29" (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 14:47:29,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:47:29,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:47:29,649 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 14:47:29,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 14:47:29,649 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:47:29,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:47:29,650 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 14:47:29,650 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 14:47:29,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 14:47:29,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:47:29,650 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:47:29,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:47:29,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:47:30,026 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:47:30,027 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 14:47:30,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:47:30 BoogieIcfgContainer [2020-09-25 14:47:30,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:47:30,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:47:30,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:47:30,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:47:30,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:47:29" (1/3) ... [2020-09-25 14:47:30,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b3347 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:47:30, skipping insertion in model container [2020-09-25 14:47:30,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:47:29" (2/3) ... [2020-09-25 14:47:30,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b3347 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:47:30, skipping insertion in model container [2020-09-25 14:47:30,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:47:30" (3/3) ... [2020-09-25 14:47:30,046 INFO L109 eAbstractionObserver]: Analyzing ICFG SpamAssassin-loop.i [2020-09-25 14:47:30,059 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:47:30,070 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:47:30,093 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:47:30,127 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:47:30,127 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:47:30,127 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:47:30,127 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:47:30,128 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:47:30,128 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:47:30,128 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:47:30,128 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:47:30,153 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-09-25 14:47:30,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 14:47:30,162 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:30,163 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] [2020-09-25 14:47:30,164 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:30,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:30,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1441743938, now seen corresponding path program 1 times [2020-09-25 14:47:30,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:30,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706679891] [2020-09-25 14:47:30,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:30,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:30,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:30,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:30,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:47:30,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:30,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-25 14:47:30,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:30,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:30,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:47:30,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 14:47:30,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:30,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:47:30,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:30,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:30,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:30,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:30,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:47:30,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:30,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:47:30,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:30,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:30,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:30,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:30,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:30,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:30,639 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 14:47:30,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706679891] [2020-09-25 14:47:30,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:30,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:47:30,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946217798] [2020-09-25 14:47:30,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:47:30,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:30,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:47:30,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:47:30,674 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 5 states. [2020-09-25 14:47:30,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:30,889 INFO L93 Difference]: Finished difference Result 143 states and 210 transitions. [2020-09-25 14:47:30,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:47:30,892 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-25 14:47:30,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:30,906 INFO L225 Difference]: With dead ends: 143 [2020-09-25 14:47:30,907 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 14:47:30,913 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 14:47:30,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 14:47:30,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 73. [2020-09-25 14:47:30,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-25 14:47:30,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 91 transitions. [2020-09-25 14:47:30,978 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 91 transitions. Word has length 25 [2020-09-25 14:47:30,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:30,979 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 91 transitions. [2020-09-25 14:47:30,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:47:30,979 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 91 transitions. [2020-09-25 14:47:30,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 14:47:30,981 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:30,981 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] [2020-09-25 14:47:30,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:47:30,982 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:30,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:30,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1406858677, now seen corresponding path program 1 times [2020-09-25 14:47:30,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:30,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414748044] [2020-09-25 14:47:30,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:30,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:31,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:31,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:31,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:31,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:47:31,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:47:31,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-25 14:47:31,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:31,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:31,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:47:31,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-25 14:47:31,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:47:31,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:47:31,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:31,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:31,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:31,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:31,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:47:31,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:31,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:47:31,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:31,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:31,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:31,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:31,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:31,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:31,263 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 14:47:31,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414748044] [2020-09-25 14:47:31,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:31,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:47:31,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571938687] [2020-09-25 14:47:31,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:47:31,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:31,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:47:31,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:47:31,268 INFO L87 Difference]: Start difference. First operand 73 states and 91 transitions. Second operand 5 states. [2020-09-25 14:47:31,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:31,400 INFO L93 Difference]: Finished difference Result 85 states and 102 transitions. [2020-09-25 14:47:31,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:47:31,401 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-25 14:47:31,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:31,405 INFO L225 Difference]: With dead ends: 85 [2020-09-25 14:47:31,405 INFO L226 Difference]: Without dead ends: 83 [2020-09-25 14:47:31,406 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 14:47:31,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-25 14:47:31,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2020-09-25 14:47:31,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 14:47:31,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 97 transitions. [2020-09-25 14:47:31,423 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 97 transitions. Word has length 25 [2020-09-25 14:47:31,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:31,423 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 97 transitions. [2020-09-25 14:47:31,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:47:31,424 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 97 transitions. [2020-09-25 14:47:31,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 14:47:31,425 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:31,425 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:47:31,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:47:31,425 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:31,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:31,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1771333938, now seen corresponding path program 1 times [2020-09-25 14:47:31,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:31,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550835506] [2020-09-25 14:47:31,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:31,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:31,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:31,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 14:47:31,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:31,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 14:47:31,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:31,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:31,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:47:31,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 14:47:31,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 14:47:31,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:31,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:31,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:31,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:31,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:47:31,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:31,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:47:31,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:31,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:31,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:31,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:31,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:31,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:31,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:47:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:31,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:31,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:31,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:31,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:31,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 14:47:31,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:31,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:31,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:31,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:31,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:31,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:31,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:47:31,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550835506] [2020-09-25 14:47:31,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:31,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:47:31,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896248102] [2020-09-25 14:47:31,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:47:31,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:31,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:47:31,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:47:31,626 INFO L87 Difference]: Start difference. First operand 81 states and 97 transitions. Second operand 5 states. [2020-09-25 14:47:31,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:31,751 INFO L93 Difference]: Finished difference Result 116 states and 145 transitions. [2020-09-25 14:47:31,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:47:31,752 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-25 14:47:31,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:31,754 INFO L225 Difference]: With dead ends: 116 [2020-09-25 14:47:31,754 INFO L226 Difference]: Without dead ends: 114 [2020-09-25 14:47:31,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 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 14:47:31,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-25 14:47:31,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 100. [2020-09-25 14:47:31,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-09-25 14:47:31,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 125 transitions. [2020-09-25 14:47:31,773 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 125 transitions. Word has length 30 [2020-09-25 14:47:31,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:31,773 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 125 transitions. [2020-09-25 14:47:31,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:47:31,773 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 125 transitions. [2020-09-25 14:47:31,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 14:47:31,775 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:31,775 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:47:31,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:47:31,776 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:31,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:31,776 INFO L82 PathProgramCache]: Analyzing trace with hash 456630219, now seen corresponding path program 1 times [2020-09-25 14:47:31,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:31,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457535283] [2020-09-25 14:47:31,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:31,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:31,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:31,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 14:47:31,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:31,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 14:47:31,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:31,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:31,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:47:31,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 14:47:31,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 14:47:31,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:31,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:31,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:31,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:31,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:47:31,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:31,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:47:31,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:31,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:31,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:31,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:31,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:31,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:31,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:47:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:31,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:31,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:31,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:31,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:31,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:47:31,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:31,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:31,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:31,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:31,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:31,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:31,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 14:47:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:31,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:31,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:31,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:31,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:31,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:47:32,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:32,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:32,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:32,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:32,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:32,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:32,006 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 14:47:32,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457535283] [2020-09-25 14:47:32,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:32,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 14:47:32,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672440793] [2020-09-25 14:47:32,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:47:32,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:32,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:47:32,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:47:32,008 INFO L87 Difference]: Start difference. First operand 100 states and 125 transitions. Second operand 6 states. [2020-09-25 14:47:32,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:32,167 INFO L93 Difference]: Finished difference Result 106 states and 130 transitions. [2020-09-25 14:47:32,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:47:32,168 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-25 14:47:32,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:32,170 INFO L225 Difference]: With dead ends: 106 [2020-09-25 14:47:32,170 INFO L226 Difference]: Without dead ends: 104 [2020-09-25 14:47:32,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:47:32,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-25 14:47:32,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-09-25 14:47:32,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-25 14:47:32,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 128 transitions. [2020-09-25 14:47:32,187 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 128 transitions. Word has length 35 [2020-09-25 14:47:32,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:32,188 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 128 transitions. [2020-09-25 14:47:32,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:47:32,188 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 128 transitions. [2020-09-25 14:47:32,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 14:47:32,189 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:32,190 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:47:32,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:47:32,190 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:32,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:32,190 INFO L82 PathProgramCache]: Analyzing trace with hash 364478305, now seen corresponding path program 1 times [2020-09-25 14:47:32,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:32,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083958392] [2020-09-25 14:47:32,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:32,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:32,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:32,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 14:47:32,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:32,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 14:47:32,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:32,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:32,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:47:32,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 14:47:32,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 14:47:32,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:32,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:32,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:32,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:32,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:47:32,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:32,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:47:32,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:32,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:32,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:32,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:32,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:32,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:32,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:47:32,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:32,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:32,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:32,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:32,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:32,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:47:32,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:32,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:32,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:32,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:32,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:32,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:32,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 14:47:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:32,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:32,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:32,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:32,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:32,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:47:32,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:32,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:32,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:32,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:32,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:32,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:32,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-09-25 14:47:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:32,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:32,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:32,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:32,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:32,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:47:32,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:32,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:32,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:32,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:32,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:32,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:32,391 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 14:47:32,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083958392] [2020-09-25 14:47:32,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:32,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:47:32,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260551050] [2020-09-25 14:47:32,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:47:32,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:32,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:47:32,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:47:32,394 INFO L87 Difference]: Start difference. First operand 104 states and 128 transitions. Second operand 5 states. [2020-09-25 14:47:32,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:32,506 INFO L93 Difference]: Finished difference Result 135 states and 172 transitions. [2020-09-25 14:47:32,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:47:32,507 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-09-25 14:47:32,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:32,509 INFO L225 Difference]: With dead ends: 135 [2020-09-25 14:47:32,509 INFO L226 Difference]: Without dead ends: 133 [2020-09-25 14:47:32,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 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 14:47:32,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-09-25 14:47:32,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 125. [2020-09-25 14:47:32,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-25 14:47:32,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 162 transitions. [2020-09-25 14:47:32,527 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 162 transitions. Word has length 40 [2020-09-25 14:47:32,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:32,527 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 162 transitions. [2020-09-25 14:47:32,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:47:32,528 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 162 transitions. [2020-09-25 14:47:32,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 14:47:32,530 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:32,530 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:47:32,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:47:32,531 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:32,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:32,531 INFO L82 PathProgramCache]: Analyzing trace with hash 914533499, now seen corresponding path program 1 times [2020-09-25 14:47:32,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:32,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382015164] [2020-09-25 14:47:32,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:32,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:32,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:32,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:32,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:32,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:34,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:34,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 14:47:34,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:47:34,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1660 [2020-09-25 14:47:34,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:34,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:34,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:47:34,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 14:47:34,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 14:47:34,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:34,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:34,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:34,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:34,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:47:34,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:34,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:47:34,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:34,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:34,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:34,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:34,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:34,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:34,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:47:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:34,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:34,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:34,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:34,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:34,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:34,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:34,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:34,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:34,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:34,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:34,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:34,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 14:47:34,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:34,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:34,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:34,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:34,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:34,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:47:34,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:34,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:34,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:34,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:34,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:34,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:34,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-09-25 14:47:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:34,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:34,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:34,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:34,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:34,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:47:34,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:34,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:34,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:34,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:34,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:34,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:34,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 14:47:34,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:34,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:34,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:34,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:34,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:34,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:47:34,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:34,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:34,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:34,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:34,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:34,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:34,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 14:47:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:34,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:34,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:34,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:34,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:34,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:47:34,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:34,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:34,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:34,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 14:47:34,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:34,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:47:34,334 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 14:47:34,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382015164] [2020-09-25 14:47:34,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:34,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:47:34,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181755248] [2020-09-25 14:47:34,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:47:34,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:34,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:47:34,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:47:34,338 INFO L87 Difference]: Start difference. First operand 125 states and 162 transitions. Second operand 5 states. [2020-09-25 14:47:34,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:34,428 INFO L93 Difference]: Finished difference Result 229 states and 302 transitions. [2020-09-25 14:47:34,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:47:34,429 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-09-25 14:47:34,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:34,431 INFO L225 Difference]: With dead ends: 229 [2020-09-25 14:47:34,432 INFO L226 Difference]: Without dead ends: 128 [2020-09-25 14:47:34,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:47:34,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-09-25 14:47:34,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-09-25 14:47:34,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-09-25 14:47:34,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 165 transitions. [2020-09-25 14:47:34,473 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 165 transitions. Word has length 58 [2020-09-25 14:47:34,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:34,473 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 165 transitions. [2020-09-25 14:47:34,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:47:34,473 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 165 transitions. [2020-09-25 14:47:34,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 14:47:34,478 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:34,479 INFO L422 BasicCegarLoop]: trace histogram [7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:47:34,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:47:34,479 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:34,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:34,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1807369608, now seen corresponding path program 1 times [2020-09-25 14:47:34,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:34,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449246861] [2020-09-25 14:47:34,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:34,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:34,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:34,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:34,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:47:34,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:47:34,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 410 [2020-09-25 14:47:34,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:34,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:34,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:47:34,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 14:47:34,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 14:47:34,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:34,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:34,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:34,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:34,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:47:34,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:34,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:47:34,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:34,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:34,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:34,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:34,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:34,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:34,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:47:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:34,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:35,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:35,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:35,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:35,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:47:35,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:47:35,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:35,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:35,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:35,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:35,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:35,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:35,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 14:47:35,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:35,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:35,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:35,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:35,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:35,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:35,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:35,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:35,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:35,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:35,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:35,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:35,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 14:47:35,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:35,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:35,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:35,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:35,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:35,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:35,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:35,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:35,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:35,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:35,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:35,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:35,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 14:47:35,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:35,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:35,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:35,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:35,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:35,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:47:35,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:35,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:35,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:35,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:35,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:35,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:35,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 14:47:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:35,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:35,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:35,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:35,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:35,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:47:35,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:35,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:35,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:35,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:35,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:35,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:35,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 14:47:35,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:35,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:35,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:35,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:35,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:35,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:35,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:35,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:35,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:35,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:35,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:35,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:35,107 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-25 14:47:35,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449246861] [2020-09-25 14:47:35,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:35,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:47:35,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631214411] [2020-09-25 14:47:35,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:47:35,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:35,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:47:35,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:47:35,112 INFO L87 Difference]: Start difference. First operand 128 states and 165 transitions. Second operand 7 states. [2020-09-25 14:47:35,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:35,335 INFO L93 Difference]: Finished difference Result 136 states and 172 transitions. [2020-09-25 14:47:35,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 14:47:35,335 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-09-25 14:47:35,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:35,337 INFO L225 Difference]: With dead ends: 136 [2020-09-25 14:47:35,337 INFO L226 Difference]: Without dead ends: 134 [2020-09-25 14:47:35,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:47:35,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-09-25 14:47:35,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 132. [2020-09-25 14:47:35,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-09-25 14:47:35,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 168 transitions. [2020-09-25 14:47:35,364 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 168 transitions. Word has length 64 [2020-09-25 14:47:35,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:35,365 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 168 transitions. [2020-09-25 14:47:35,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:47:35,365 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 168 transitions. [2020-09-25 14:47:35,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 14:47:35,367 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:35,367 INFO L422 BasicCegarLoop]: trace histogram [8, 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, 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 14:47:35,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 14:47:35,367 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:35,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:35,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1715909932, now seen corresponding path program 1 times [2020-09-25 14:47:35,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:35,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276269104] [2020-09-25 14:47:35,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:35,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:35,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:35,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:36,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:36,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 14:47:36,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:47:36,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 740 [2020-09-25 14:47:36,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:36,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:36,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:47:36,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 14:47:36,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 14:47:36,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:36,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:36,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:36,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:36,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:47:36,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:36,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:47:36,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:36,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:36,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:36,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:36,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:36,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:36,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:47:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:36,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:36,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:36,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:36,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:36,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:47:36,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:36,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:36,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:36,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:36,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:36,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:36,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 14:47:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:36,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:36,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:36,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:36,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:36,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:36,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:36,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:36,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:36,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:36,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:36,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:36,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 14:47:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:36,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:36,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:36,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:36,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:36,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:36,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:36,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:36,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:36,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:36,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:36,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:36,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 14:47:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:36,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:36,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:36,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:36,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:36,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:36,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:36,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:36,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:36,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:36,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:36,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:36,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 14:47:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:36,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:36,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:36,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:36,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:36,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:36,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:36,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:36,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:36,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:36,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:36,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:36,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 14:47:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:36,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:36,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:36,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:36,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:36,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:36,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:36,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:36,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:36,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:36,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:36,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:36,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 14:47:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:36,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:36,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:36,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:36,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:36,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:36,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:36,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:36,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:36,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:36,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:36,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:36,314 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-09-25 14:47:36,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276269104] [2020-09-25 14:47:36,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:36,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:47:36,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577310373] [2020-09-25 14:47:36,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:47:36,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:36,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:47:36,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:47:36,316 INFO L87 Difference]: Start difference. First operand 132 states and 168 transitions. Second operand 7 states. [2020-09-25 14:47:36,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:36,478 INFO L93 Difference]: Finished difference Result 162 states and 205 transitions. [2020-09-25 14:47:36,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 14:47:36,479 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-09-25 14:47:36,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:36,480 INFO L225 Difference]: With dead ends: 162 [2020-09-25 14:47:36,481 INFO L226 Difference]: Without dead ends: 160 [2020-09-25 14:47:36,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:47:36,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-09-25 14:47:36,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 146. [2020-09-25 14:47:36,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-25 14:47:36,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 185 transitions. [2020-09-25 14:47:36,496 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 185 transitions. Word has length 69 [2020-09-25 14:47:36,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:36,496 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 185 transitions. [2020-09-25 14:47:36,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:47:36,497 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 185 transitions. [2020-09-25 14:47:36,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 14:47:36,498 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:36,498 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:47:36,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 14:47:36,498 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:36,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:36,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1298936315, now seen corresponding path program 1 times [2020-09-25 14:47:36,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:36,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583493853] [2020-09-25 14:47:36,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:36,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:36,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:36,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:36,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:37,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:37,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 14:47:37,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:47:37,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 782 [2020-09-25 14:47:37,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:37,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:37,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:47:37,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 14:47:37,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 14:47:37,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:37,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:37,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:37,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:37,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:47:37,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:37,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:47:37,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:37,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:37,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:37,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:37,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:37,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:37,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:47:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:37,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:37,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:37,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:37,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:37,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:47:37,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:37,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:37,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:37,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:37,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:37,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:37,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 14:47:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:37,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:37,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:37,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:37,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:37,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:47:37,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:47:37,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:37,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:37,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:37,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:37,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:37,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:37,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 14:47:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:37,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:37,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:37,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:37,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:37,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:47:37,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:37,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:37,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:37,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:37,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:37,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:37,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 14:47:37,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:37,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:37,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:37,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:37,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:37,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:47:37,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:47:37,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:37,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:37,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:37,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:37,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:37,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:37,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 14:47:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:37,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:37,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:37,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:37,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:37,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:47:37,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:37,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:37,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:37,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:37,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:37,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:37,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 14:47:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:37,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:37,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:37,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:37,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:37,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:47:37,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:37,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:37,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:37,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:37,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:37,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:37,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-25 14:47:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:37,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:37,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:37,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:37,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:37,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:37,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:37,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:37,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:37,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:37,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:37,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:37,497 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-09-25 14:47:37,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583493853] [2020-09-25 14:47:37,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:37,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:47:37,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687938969] [2020-09-25 14:47:37,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:47:37,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:37,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:47:37,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:47:37,506 INFO L87 Difference]: Start difference. First operand 146 states and 185 transitions. Second operand 7 states. [2020-09-25 14:47:37,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:37,748 INFO L93 Difference]: Finished difference Result 210 states and 280 transitions. [2020-09-25 14:47:37,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:47:37,748 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 71 [2020-09-25 14:47:37,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:37,750 INFO L225 Difference]: With dead ends: 210 [2020-09-25 14:47:37,750 INFO L226 Difference]: Without dead ends: 206 [2020-09-25 14:47:37,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:47:37,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-09-25 14:47:37,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 188. [2020-09-25 14:47:37,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-09-25 14:47:37,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 249 transitions. [2020-09-25 14:47:37,770 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 249 transitions. Word has length 71 [2020-09-25 14:47:37,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:37,771 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 249 transitions. [2020-09-25 14:47:37,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:47:37,771 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 249 transitions. [2020-09-25 14:47:37,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 14:47:37,772 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:37,772 INFO L422 BasicCegarLoop]: trace histogram [9, 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, 1, 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 14:47:37,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 14:47:37,773 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:37,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:37,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1528474552, now seen corresponding path program 1 times [2020-09-25 14:47:37,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:37,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054811575] [2020-09-25 14:47:37,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:37,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:38,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:38,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-09-25 14:47:38,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:38,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-09-25 14:47:38,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:38,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:38,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:47:38,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 14:47:38,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 14:47:38,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:38,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:38,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:38,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:38,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:47:38,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:38,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:47:38,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:38,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:38,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:38,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:38,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:38,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:38,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:47:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:38,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:38,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:38,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:38,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:38,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:47:38,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:38,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:38,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:38,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:38,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:38,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:38,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 14:47:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:38,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:38,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:38,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:38,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:38,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:38,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:38,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:38,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:38,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:38,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:38,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:38,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 14:47:38,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:38,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:38,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:38,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:38,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:38,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:47:38,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:38,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:38,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:38,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:38,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:38,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:38,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 14:47:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:38,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:38,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:38,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:38,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:38,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:38,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:38,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:38,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:38,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:38,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:38,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:38,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 14:47:38,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:38,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:38,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:38,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:38,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:38,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:47:38,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:38,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:38,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:38,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:38,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:38,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:38,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 14:47:38,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:38,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:38,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:38,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:38,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:38,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:38,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:38,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:38,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:38,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:38,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:38,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:38,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 14:47:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:38,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:38,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:38,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:38,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:38,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:47:38,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:38,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:38,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:38,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:38,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:38,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:38,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 14:47:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:38,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:38,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:38,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:38,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:38,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:47:38,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:38,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:38,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:38,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:38,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:38,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:38,202 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-09-25 14:47:38,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2054811575] [2020-09-25 14:47:38,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:38,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 14:47:38,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539492361] [2020-09-25 14:47:38,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:47:38,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:38,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:47:38,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:47:38,204 INFO L87 Difference]: Start difference. First operand 188 states and 249 transitions. Second operand 8 states. [2020-09-25 14:47:38,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:38,420 INFO L93 Difference]: Finished difference Result 194 states and 254 transitions. [2020-09-25 14:47:38,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 14:47:38,420 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 74 [2020-09-25 14:47:38,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:38,423 INFO L225 Difference]: With dead ends: 194 [2020-09-25 14:47:38,423 INFO L226 Difference]: Without dead ends: 192 [2020-09-25 14:47:38,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:47:38,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-09-25 14:47:38,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2020-09-25 14:47:38,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-09-25 14:47:38,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 252 transitions. [2020-09-25 14:47:38,447 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 252 transitions. Word has length 74 [2020-09-25 14:47:38,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:38,447 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 252 transitions. [2020-09-25 14:47:38,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:47:38,448 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 252 transitions. [2020-09-25 14:47:38,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 14:47:38,449 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:38,450 INFO L422 BasicCegarLoop]: trace histogram [10, 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, 1, 1, 1, 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 14:47:38,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 14:47:38,450 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:38,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:38,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1530703596, now seen corresponding path program 1 times [2020-09-25 14:47:38,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:38,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528931205] [2020-09-25 14:47:38,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:38,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:38,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:38,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:38,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-25 14:47:38,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:47:38,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 516 [2020-09-25 14:47:38,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:38,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:38,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:47:38,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 14:47:38,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 14:47:38,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:39,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:39,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:39,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:39,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:39,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:47:39,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:39,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:47:39,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:39,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:39,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:39,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:39,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:39,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:39,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:47:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:39,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:39,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:39,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:39,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:39,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:47:39,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:39,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:39,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:39,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:39,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:39,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:39,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 14:47:39,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:39,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:39,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:39,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:39,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:39,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:47:39,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:39,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:39,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:39,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:39,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:39,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:39,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 14:47:39,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:39,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:39,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:39,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:39,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:39,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:47:39,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:39,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:39,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:39,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:39,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:39,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:39,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 14:47:39,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:39,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:39,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:39,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:39,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:39,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:47:39,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:39,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:39,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:39,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:39,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:39,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:39,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 14:47:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:39,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:39,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:39,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:39,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:39,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:39,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:39,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:39,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:39,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:39,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:39,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:39,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 14:47:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:39,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:39,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:39,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:39,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:39,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:47:39,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:47:39,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:39,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:39,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:39,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:39,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:39,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:39,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 14:47:39,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:39,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:39,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:39,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:39,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:39,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:47:39,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:39,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:39,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:39,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:39,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:39,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:39,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 14:47:39,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:39,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:39,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:39,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:39,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:39,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:47:39,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:39,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:39,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:39,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:39,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:39,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:39,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 14:47:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:39,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:39,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:39,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:39,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:39,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:47:39,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:39,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:39,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:39,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:39,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:39,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:39,238 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-09-25 14:47:39,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [528931205] [2020-09-25 14:47:39,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:39,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:47:39,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172254286] [2020-09-25 14:47:39,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:47:39,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:39,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:47:39,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:47:39,241 INFO L87 Difference]: Start difference. First operand 192 states and 252 transitions. Second operand 7 states. [2020-09-25 14:47:39,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:39,449 INFO L93 Difference]: Finished difference Result 220 states and 283 transitions. [2020-09-25 14:47:39,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 14:47:39,450 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2020-09-25 14:47:39,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:39,452 INFO L225 Difference]: With dead ends: 220 [2020-09-25 14:47:39,452 INFO L226 Difference]: Without dead ends: 218 [2020-09-25 14:47:39,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:47:39,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-25 14:47:39,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 206. [2020-09-25 14:47:39,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-09-25 14:47:39,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 269 transitions. [2020-09-25 14:47:39,471 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 269 transitions. Word has length 79 [2020-09-25 14:47:39,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:39,471 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 269 transitions. [2020-09-25 14:47:39,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:47:39,472 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 269 transitions. [2020-09-25 14:47:39,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 14:47:39,473 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:39,473 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:47:39,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 14:47:39,473 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:39,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:39,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1064000984, now seen corresponding path program 1 times [2020-09-25 14:47:39,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:39,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312997168] [2020-09-25 14:47:39,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:39,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:39,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:39,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:39,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-09-25 14:47:39,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:47:39,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 438 [2020-09-25 14:47:39,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:39,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:39,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:47:39,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 14:47:39,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 14:47:39,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:39,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:39,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:39,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:39,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:47:39,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:39,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:47:39,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:39,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:39,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:39,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:39,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:39,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:39,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:47:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:39,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:39,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:39,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:39,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:39,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:47:39,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:39,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:39,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:39,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:39,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:39,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:39,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 14:47:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:40,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:40,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:40,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:40,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:40,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:40,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:40,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:40,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:40,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:40,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:40,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:40,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 14:47:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:40,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:40,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:40,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:40,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:40,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:40,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:40,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:40,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:40,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:40,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:40,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:40,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 14:47:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:40,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:40,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:40,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:40,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:40,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:47:40,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:40,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:40,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:40,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:40,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:40,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:40,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 14:47:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:40,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:40,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:40,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:40,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:40,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:47:40,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:40,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:40,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:40,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:40,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:40,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:40,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 14:47:40,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:40,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:40,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:40,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:40,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:40,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:47:40,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:47:40,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:40,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:40,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:40,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:40,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:40,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:40,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-25 14:47:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:40,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:40,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:40,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:40,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:40,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:40,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:40,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:40,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:40,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:40,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:40,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:40,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-25 14:47:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:40,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:40,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:40,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:40,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:40,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:40,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:40,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:40,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:40,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:40,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:40,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:40,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-25 14:47:40,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:40,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:40,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:40,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:40,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:40,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:47:40,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:40,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:40,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:40,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:40,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:40,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:40,143 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-09-25 14:47:40,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312997168] [2020-09-25 14:47:40,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:40,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 14:47:40,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343832296] [2020-09-25 14:47:40,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:47:40,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:40,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:47:40,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:47:40,146 INFO L87 Difference]: Start difference. First operand 206 states and 269 transitions. Second operand 6 states. [2020-09-25 14:47:40,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:40,256 INFO L93 Difference]: Finished difference Result 244 states and 322 transitions. [2020-09-25 14:47:40,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:47:40,257 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-09-25 14:47:40,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:40,260 INFO L225 Difference]: With dead ends: 244 [2020-09-25 14:47:40,261 INFO L226 Difference]: Without dead ends: 238 [2020-09-25 14:47:40,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:47:40,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-09-25 14:47:40,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 230. [2020-09-25 14:47:40,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-09-25 14:47:40,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 302 transitions. [2020-09-25 14:47:40,286 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 302 transitions. Word has length 81 [2020-09-25 14:47:40,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:40,286 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 302 transitions. [2020-09-25 14:47:40,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:47:40,287 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 302 transitions. [2020-09-25 14:47:40,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 14:47:40,288 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:40,288 INFO L422 BasicCegarLoop]: trace histogram [11, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:47:40,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 14:47:40,289 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:40,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:40,289 INFO L82 PathProgramCache]: Analyzing trace with hash -895183749, now seen corresponding path program 1 times [2020-09-25 14:47:40,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:40,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232521859] [2020-09-25 14:47:40,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:40,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:40,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:40,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:40,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 14:47:40,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:40,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-09-25 14:47:40,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:40,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:40,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:47:40,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 14:47:40,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 14:47:40,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:40,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:40,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:40,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:40,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:40,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:47:40,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:40,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:47:40,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:40,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:40,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:40,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:40,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:40,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:40,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:47:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:40,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:40,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:40,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:40,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:40,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:47:40,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:40,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:40,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:40,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:40,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:40,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:40,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 14:47:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:40,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:40,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:40,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:40,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:40,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:40,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:40,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:40,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:40,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:40,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:40,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:40,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 14:47:40,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:40,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:40,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:40,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:40,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:40,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:47:40,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:40,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:40,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:40,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:40,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:40,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:40,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 14:47:40,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:40,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:40,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:40,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:40,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:40,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:47:40,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:40,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:40,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:40,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:40,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:40,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:40,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 14:47:40,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:40,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:40,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:40,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:40,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:40,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:47:40,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:40,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:40,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:40,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:40,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:40,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:40,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 14:47:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:40,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:40,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:40,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:40,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:40,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:47:40,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:40,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:40,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:40,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:40,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:40,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:40,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 14:47:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:40,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:40,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:40,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:40,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:40,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:47:40,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:40,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:40,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:40,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:40,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:40,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:40,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 14:47:40,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:40,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:40,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:40,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:40,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:40,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:47:40,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:40,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:40,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:40,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:40,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:40,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:40,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 14:47:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:40,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:40,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:40,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:40,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:40,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:47:40,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:40,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:40,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:40,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:40,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:40,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:40,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 14:47:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:40,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:40,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:40,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:40,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:40,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:47:40,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:40,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:40,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:40,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:40,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:40,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:40,961 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-09-25 14:47:40,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232521859] [2020-09-25 14:47:40,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:40,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 14:47:40,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904616435] [2020-09-25 14:47:40,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:47:40,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:40,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:47:40,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:47:40,964 INFO L87 Difference]: Start difference. First operand 230 states and 302 transitions. Second operand 10 states. [2020-09-25 14:47:41,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:41,273 INFO L93 Difference]: Finished difference Result 236 states and 307 transitions. [2020-09-25 14:47:41,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 14:47:41,274 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-09-25 14:47:41,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:41,276 INFO L225 Difference]: With dead ends: 236 [2020-09-25 14:47:41,276 INFO L226 Difference]: Without dead ends: 234 [2020-09-25 14:47:41,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2020-09-25 14:47:41,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-09-25 14:47:41,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-09-25 14:47:41,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-09-25 14:47:41,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 305 transitions. [2020-09-25 14:47:41,312 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 305 transitions. Word has length 90 [2020-09-25 14:47:41,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:41,313 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 305 transitions. [2020-09-25 14:47:41,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:47:41,313 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 305 transitions. [2020-09-25 14:47:41,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-09-25 14:47:41,315 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:41,315 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:47:41,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 14:47:41,315 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:41,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:41,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1272604239, now seen corresponding path program 1 times [2020-09-25 14:47:41,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:41,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451882251] [2020-09-25 14:47:41,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:41,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:41,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:41,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:41,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:43,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:43,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 14:47:43,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:47:43,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1951 [2020-09-25 14:47:43,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:43,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:43,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:47:43,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 14:47:43,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 14:47:43,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:43,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:43,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:43,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:43,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:47:43,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:43,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:47:43,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:43,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:43,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:43,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:43,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:43,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:43,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:47:43,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:43,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:43,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:43,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:43,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:43,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:47:43,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:43,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:43,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:43,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:43,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:43,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-09-25 14:47:43,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 14:47:43,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:43,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:43,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:43,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:43,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:43,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:47:43,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:43,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:43,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:43,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:43,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:43,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:43,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 14:47:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:43,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:43,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:43,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:43,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:43,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:47:43,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:43,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:43,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:43,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:43,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:43,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:43,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 14:47:43,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:43,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:43,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:43,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:43,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:43,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:47:43,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:43,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:43,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:43,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:43,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:43,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:43,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 14:47:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:43,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:43,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:43,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:43,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:43,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:43,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:43,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:43,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:43,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:43,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:43,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:43,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 14:47:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:43,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:43,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:43,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:43,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:43,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:47:43,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:47:43,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:43,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:43,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:43,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:43,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:43,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:43,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 14:47:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:43,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:43,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:43,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:43,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:43,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:43,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:43,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:43,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:43,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:43,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:43,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:43,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 14:47:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:43,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:43,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:43,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:43,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:43,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:47:43,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:43,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:43,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:43,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:43,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:43,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:43,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 14:47:43,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:43,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:43,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:43,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:43,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:43,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:43,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:43,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:43,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:43,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:43,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:43,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:43,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 14:47:43,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:43,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:43,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:43,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:43,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:43,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:47:43,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:43,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:43,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:43,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:43,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:43,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:43,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 14:47:43,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:43,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:43,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:43,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:43,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:43,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:47:43,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:43,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:43,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:43,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:43,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:43,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:43,533 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-09-25 14:47:43,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451882251] [2020-09-25 14:47:43,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:43,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 14:47:43,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577271967] [2020-09-25 14:47:43,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:47:43,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:43,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:47:43,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:47:43,535 INFO L87 Difference]: Start difference. First operand 234 states and 305 transitions. Second operand 9 states. [2020-09-25 14:47:43,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:43,808 INFO L93 Difference]: Finished difference Result 262 states and 335 transitions. [2020-09-25 14:47:43,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:47:43,808 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2020-09-25 14:47:43,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:43,811 INFO L225 Difference]: With dead ends: 262 [2020-09-25 14:47:43,812 INFO L226 Difference]: Without dead ends: 260 [2020-09-25 14:47:43,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:47:43,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-09-25 14:47:43,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 246. [2020-09-25 14:47:43,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-09-25 14:47:43,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 318 transitions. [2020-09-25 14:47:43,839 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 318 transitions. Word has length 95 [2020-09-25 14:47:43,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:43,840 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 318 transitions. [2020-09-25 14:47:43,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:47:43,840 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 318 transitions. [2020-09-25 14:47:43,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-09-25 14:47:43,845 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:43,845 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:47:43,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 14:47:43,845 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:43,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:43,846 INFO L82 PathProgramCache]: Analyzing trace with hash -960498755, now seen corresponding path program 1 times [2020-09-25 14:47:43,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:43,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427462409] [2020-09-25 14:47:43,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:43,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:43,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:43,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:43,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:44,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:44,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:48,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:48,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 14:47:48,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:47:48,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:47:48,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:48,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:48,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:47:48,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 14:47:48,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 14:47:48,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:48,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:48,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:48,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:48,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:47:48,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:48,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:47:48,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:48,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:48,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:48,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:48,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:48,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:48,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:47:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:48,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:48,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:48,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:48,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:48,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:48,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:48,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:48,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:48,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:48,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:48,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:48,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 14:47:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:48,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:48,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:48,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:48,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:48,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:47:48,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:47:48,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:48,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:48,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:48,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:48,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:48,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:48,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 14:47:48,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:48,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:48,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:48,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:48,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:48,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:47:48,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:48,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:48,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:48,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:48,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:48,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:48,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 14:47:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:48,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:48,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:48,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:48,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:48,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:47:48,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:47:48,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:48,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:48,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:48,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:48,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:48,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:48,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 14:47:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:48,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:49,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:49,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:49,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:49,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:47:49,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:49,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:49,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:49,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:49,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:49,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:49,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 14:47:49,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:49,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:49,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:49,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:49,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:49,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:47:49,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:49,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:49,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:49,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:49,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:49,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:49,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-25 14:47:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:49,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:49,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:49,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:49,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:49,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:49,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:49,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:49,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:49,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:49,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:49,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:49,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-25 14:47:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:49,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:49,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:49,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:49,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:49,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:47:49,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:49,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:49,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:49,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:49,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:49,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:49,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 14:47:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:49,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:49,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:49,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:49,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:49,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:49,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:49,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:49,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:49,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:49,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:49,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:49,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-25 14:47:49,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:49,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:49,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:49,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:49,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:49,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:47:49,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:49,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:49,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:49,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:49,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:49,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:49,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-25 14:47:49,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:49,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:49,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:49,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:49,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:49,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:47:49,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:49,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:49,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:49,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:49,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:49,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:49,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 14:47:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:49,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:49,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:49,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:49,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:49,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:47:49,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:49,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:49,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:49,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:49,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:49,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:49,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-25 14:47:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:49,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:49,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:49,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:49,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:49,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:47:49,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:49,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:49,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:49,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:49,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:49,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:49,127 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-09-25 14:47:49,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1427462409] [2020-09-25 14:47:49,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:49,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 14:47:49,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294081567] [2020-09-25 14:47:49,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:47:49,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:49,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:47:49,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:47:49,130 INFO L87 Difference]: Start difference. First operand 246 states and 318 transitions. Second operand 8 states. [2020-09-25 14:47:49,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:49,412 INFO L93 Difference]: Finished difference Result 293 states and 378 transitions. [2020-09-25 14:47:49,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 14:47:49,414 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 110 [2020-09-25 14:47:49,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:49,416 INFO L225 Difference]: With dead ends: 293 [2020-09-25 14:47:49,416 INFO L226 Difference]: Without dead ends: 291 [2020-09-25 14:47:49,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:47:49,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-09-25 14:47:49,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 270. [2020-09-25 14:47:49,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-09-25 14:47:49,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 349 transitions. [2020-09-25 14:47:49,451 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 349 transitions. Word has length 110 [2020-09-25 14:47:49,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:49,451 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 349 transitions. [2020-09-25 14:47:49,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:47:49,451 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 349 transitions. [2020-09-25 14:47:49,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-09-25 14:47:49,455 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:49,455 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:47:49,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 14:47:49,456 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:49,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:49,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1038471395, now seen corresponding path program 1 times [2020-09-25 14:47:49,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:49,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348017841] [2020-09-25 14:47:49,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:49,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:49,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:49,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:49,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:49,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:54,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:54,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 14:47:54,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:47:54,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 14:47:54,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:54,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:54,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:47:54,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 14:47:54,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 14:47:54,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:54,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:54,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:54,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:54,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:54,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:47:54,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:54,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:47:54,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:54,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:54,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:54,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:54,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:54,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:54,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:47:54,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:54,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:54,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:54,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:54,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:54,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:47:54,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:54,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:54,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:54,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:54,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:54,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:54,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 14:47:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:54,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:54,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:54,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:54,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:54,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:47:54,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:47:54,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:54,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:54,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:54,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:54,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:54,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:54,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 14:47:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:54,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:54,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:54,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:54,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:54,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:54,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:54,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:54,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:54,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:54,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:54,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:54,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 14:47:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:54,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:54,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:54,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:54,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:54,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:47:54,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:47:54,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:54,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:54,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:54,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:54,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:54,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:54,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 14:47:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:54,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:54,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:54,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:54,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:54,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:47:54,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:54,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:54,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:54,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:54,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:54,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 14:47:54,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 14:47:54,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:54,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:54,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:54,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:54,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:54,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:47:54,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:54,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:54,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:54,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:54,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:54,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:54,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 14:47:54,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:54,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:54,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:54,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:54,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:54,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:54,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:54,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:54,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:54,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:54,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:54,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:54,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 14:47:54,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:54,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:54,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:54,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:54,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:54,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:47:54,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:54,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:54,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:54,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:54,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:54,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:54,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 14:47:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:54,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:54,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:54,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:54,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:54,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:47:54,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:54,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:54,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:54,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:54,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:54,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:54,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 14:47:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:54,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:54,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:54,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:54,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:54,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:47:54,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:54,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:54,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:54,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:54,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:54,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:54,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 14:47:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:54,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:54,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:54,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:54,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:54,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:47:54,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:54,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:54,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:54,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:54,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:54,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:54,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-25 14:47:54,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:54,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:54,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:54,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:54,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:54,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:47:54,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:54,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:54,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:54,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:54,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:54,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:54,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-25 14:47:54,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:54,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:54,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:54,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:54,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:54,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:54,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:54,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:54,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:54,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:54,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:54,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:54,749 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-09-25 14:47:54,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348017841] [2020-09-25 14:47:54,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:54,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 14:47:54,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559821664] [2020-09-25 14:47:54,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:47:54,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:54,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:47:54,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:47:54,753 INFO L87 Difference]: Start difference. First operand 270 states and 349 transitions. Second operand 9 states. [2020-09-25 14:47:55,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:55,046 INFO L93 Difference]: Finished difference Result 372 states and 494 transitions. [2020-09-25 14:47:55,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 14:47:55,047 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 110 [2020-09-25 14:47:55,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:55,050 INFO L225 Difference]: With dead ends: 372 [2020-09-25 14:47:55,050 INFO L226 Difference]: Without dead ends: 368 [2020-09-25 14:47:55,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-09-25 14:47:55,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2020-09-25 14:47:55,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 345. [2020-09-25 14:47:55,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-09-25 14:47:55,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 458 transitions. [2020-09-25 14:47:55,082 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 458 transitions. Word has length 110 [2020-09-25 14:47:55,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:55,084 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 458 transitions. [2020-09-25 14:47:55,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:47:55,084 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 458 transitions. [2020-09-25 14:47:55,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-25 14:47:55,087 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:55,087 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:47:55,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 14:47:55,088 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:55,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:55,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1539222205, now seen corresponding path program 1 times [2020-09-25 14:47:55,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:55,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973827209] [2020-09-25 14:47:55,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:55,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:55,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:55,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:58,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:58,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 14:47:58,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:47:58,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3287 [2020-09-25 14:47:58,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:58,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:58,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:47:58,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 14:47:58,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 14:47:58,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:58,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:47:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:58,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:58,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:58,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:47:58,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:58,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:47:58,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:58,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:58,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:47:58,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:58,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:47:58,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 14:47:58,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:47:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:58,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:58,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:58,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:58,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:58,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:47:58,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:58,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:58,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:58,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:58,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:58,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:58,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 14:47:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:58,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:58,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:58,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:58,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:58,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:47:58,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:58,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:58,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:58,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:58,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:58,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:58,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 14:47:58,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:58,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:58,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:58,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:58,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:58,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:47:58,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:58,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:58,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:58,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:58,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:58,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:58,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 14:47:58,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:58,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:58,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:58,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:58,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:58,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:47:58,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:58,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:58,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:58,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:58,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:58,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:58,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 14:47:58,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:58,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:58,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:58,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:58,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:58,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:58,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:58,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:58,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:58,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:58,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:58,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:58,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 14:47:58,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:58,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:58,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:58,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:58,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:58,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:47:58,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:47:58,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:58,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:58,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:58,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:58,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:58,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:47:58,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-25 14:47:58,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:58,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:58,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:58,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:58,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:58,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:47:58,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:58,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:58,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:58,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:58,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:58,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:58,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-25 14:47:58,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:58,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:58,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:58,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:58,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:58,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:47:58,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:58,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:58,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:58,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:58,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:58,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:58,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 14:47:58,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:58,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:58,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:58,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:58,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:58,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:47:58,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:58,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:58,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:58,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:58,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:58,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:58,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-25 14:47:58,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:58,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:58,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:58,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:58,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:58,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:47:58,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:58,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:58,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:58,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:58,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:58,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:58,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-25 14:47:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:58,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:58,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:58,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:58,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:58,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:58,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:58,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:58,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:58,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:58,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:58,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:58,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 14:47:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:58,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:58,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:58,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:58,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:58,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:47:58,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:58,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:58,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:58,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:58,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:58,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:58,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-25 14:47:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:58,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:58,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:58,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:58,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:58,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:47:58,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:58,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:58,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:58,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:58,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:58,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:58,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-25 14:47:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:58,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:58,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:58,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:58,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:58,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:47:58,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:58,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:58,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:58,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:58,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:58,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:58,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-25 14:47:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:58,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:58,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:47:58,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:47:58,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:47:58,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:47:58,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:47:58,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:47:58,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:47:58,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:47:58,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:47:58,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:47:58,713 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-09-25 14:47:58,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973827209] [2020-09-25 14:47:58,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:47:58,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 14:47:58,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807229447] [2020-09-25 14:47:58,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:47:58,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:47:58,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:47:58,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:47:58,717 INFO L87 Difference]: Start difference. First operand 345 states and 458 transitions. Second operand 9 states. [2020-09-25 14:47:59,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:47:59,081 INFO L93 Difference]: Finished difference Result 379 states and 496 transitions. [2020-09-25 14:47:59,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:47:59,082 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 120 [2020-09-25 14:47:59,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:47:59,086 INFO L225 Difference]: With dead ends: 379 [2020-09-25 14:47:59,086 INFO L226 Difference]: Without dead ends: 377 [2020-09-25 14:47:59,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:47:59,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2020-09-25 14:47:59,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 359. [2020-09-25 14:47:59,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2020-09-25 14:47:59,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 475 transitions. [2020-09-25 14:47:59,132 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 475 transitions. Word has length 120 [2020-09-25 14:47:59,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:47:59,133 INFO L479 AbstractCegarLoop]: Abstraction has 359 states and 475 transitions. [2020-09-25 14:47:59,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:47:59,133 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 475 transitions. [2020-09-25 14:47:59,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-25 14:47:59,136 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:47:59,137 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:47:59,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 14:47:59,137 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:47:59,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:47:59,138 INFO L82 PathProgramCache]: Analyzing trace with hash 871752502, now seen corresponding path program 1 times [2020-09-25 14:47:59,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:47:59,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420360520] [2020-09-25 14:47:59,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:47:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:47:59,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:59,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:59,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:47:59,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:04,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:04,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 14:48:04,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:48:04,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 14:48:04,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:04,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:04,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:48:04,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 14:48:04,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 14:48:04,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:04,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:48:04,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:04,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:04,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:04,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:48:04,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:04,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:48:04,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:04,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:04,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:48:04,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:04,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:48:04,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:04,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:48:04,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:04,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:04,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:04,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:04,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:04,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:48:04,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:04,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:04,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:04,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:04,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:04,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:04,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 14:48:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:04,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:04,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:04,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:04,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:04,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:48:04,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:04,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:04,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:04,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:04,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:04,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:04,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 14:48:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:04,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:04,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:04,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:04,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:04,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:48:04,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:04,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:04,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:04,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:04,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:04,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:04,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 14:48:04,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:04,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:04,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:04,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:04,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:04,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:48:04,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:04,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:04,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:04,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:04,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:04,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:04,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 14:48:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:04,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:04,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:04,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:04,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:04,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:48:04,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:04,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:04,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:04,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:04,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:04,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:04,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 14:48:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:04,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:04,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:04,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:04,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:04,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:48:04,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:48:04,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:04,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:04,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:04,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:04,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:04,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:04,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 14:48:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:04,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:04,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:04,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:04,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:04,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:48:04,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:04,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:04,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:04,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:04,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:04,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:04,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 14:48:04,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:04,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:04,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:04,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:04,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:04,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:48:04,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:04,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:04,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:04,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:04,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:04,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:04,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 14:48:04,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:04,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:04,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:04,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:04,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:04,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:48:04,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:04,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:04,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:04,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:04,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:04,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:04,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 14:48:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:04,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:04,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:04,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:04,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:04,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:48:04,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:04,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:04,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:04,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:04,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:04,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:04,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 14:48:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:04,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:04,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:04,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:04,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:04,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:48:04,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:04,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:04,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:04,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:04,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:04,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:04,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-25 14:48:04,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:04,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:04,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:04,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:04,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:04,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:48:04,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:04,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:04,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:04,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:04,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:04,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:04,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-25 14:48:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:04,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:04,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:04,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:04,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:04,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:48:04,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:04,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:04,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:04,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:04,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:04,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:04,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-25 14:48:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:04,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:04,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:04,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:04,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:04,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:48:04,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:04,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:04,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:04,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:04,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:04,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:04,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-25 14:48:04,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:04,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:04,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:04,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:04,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:04,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:48:04,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:04,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:04,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:04,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:04,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:04,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:04,462 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-09-25 14:48:04,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420360520] [2020-09-25 14:48:04,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:48:04,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 14:48:04,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947804161] [2020-09-25 14:48:04,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 14:48:04,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:48:04,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 14:48:04,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:48:04,464 INFO L87 Difference]: Start difference. First operand 359 states and 475 transitions. Second operand 11 states. [2020-09-25 14:48:04,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:48:04,840 INFO L93 Difference]: Finished difference Result 424 states and 562 transitions. [2020-09-25 14:48:04,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 14:48:04,841 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 120 [2020-09-25 14:48:04,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:48:04,844 INFO L225 Difference]: With dead ends: 424 [2020-09-25 14:48:04,844 INFO L226 Difference]: Without dead ends: 418 [2020-09-25 14:48:04,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-09-25 14:48:04,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-09-25 14:48:04,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 398. [2020-09-25 14:48:04,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-09-25 14:48:04,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 529 transitions. [2020-09-25 14:48:04,871 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 529 transitions. Word has length 120 [2020-09-25 14:48:04,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:48:04,871 INFO L479 AbstractCegarLoop]: Abstraction has 398 states and 529 transitions. [2020-09-25 14:48:04,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 14:48:04,872 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 529 transitions. [2020-09-25 14:48:04,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 14:48:04,874 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:48:04,874 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 17, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:04,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 14:48:04,875 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:48:04,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:48:04,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1668448602, now seen corresponding path program 1 times [2020-09-25 14:48:04,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:48:04,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31172648] [2020-09-25 14:48:04,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:48:04,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:04,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:05,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:05,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:05,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:09,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:09,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 14:48:09,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:48:09,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:48:09,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:09,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:09,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:48:09,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 14:48:09,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 14:48:09,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:10,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:48:10,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:10,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:10,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:10,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:48:10,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:10,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:48:10,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:10,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:10,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:48:10,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:10,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:48:10,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:10,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:48:10,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:10,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:10,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:10,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:10,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:10,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:48:10,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:10,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:10,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:10,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:10,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:10,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:10,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 14:48:10,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:10,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:10,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:10,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:10,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:10,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:48:10,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:10,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:10,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:10,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:10,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:10,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:10,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 14:48:10,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:10,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:10,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:10,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:10,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:10,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:48:10,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:10,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:10,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:10,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:10,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:10,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:10,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 14:48:10,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:10,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:10,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:10,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:10,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:10,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:48:10,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:10,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:10,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:10,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:10,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:10,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:10,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 14:48:10,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:10,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:10,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:10,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:10,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:10,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:48:10,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:10,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:10,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:10,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:10,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:10,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:10,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 14:48:10,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:10,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:10,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:10,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:10,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:10,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:48:10,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:48:10,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:10,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:10,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:10,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:10,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:10,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:10,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-25 14:48:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:10,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:10,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:10,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:10,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:10,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:48:10,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:10,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:10,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:10,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:10,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:10,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:10,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-25 14:48:10,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:10,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:10,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:10,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:10,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:10,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:48:10,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:10,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:10,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:10,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:10,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:10,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:10,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 14:48:10,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:10,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:10,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:10,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:10,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:10,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:48:10,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:10,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:10,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:10,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:10,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-25 14:48:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:10,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:10,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:10,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:10,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:10,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:48:10,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:10,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:10,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:10,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:10,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:10,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:10,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-25 14:48:10,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:10,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:10,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:10,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:10,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:10,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:48:10,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:10,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:10,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:10,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:10,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:10,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 14:48:10,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 14:48:10,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:10,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:10,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:10,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:10,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:10,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:48:10,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:10,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:10,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:10,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:10,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:10,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:10,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-25 14:48:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:10,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:10,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:10,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:10,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:10,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:48:10,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:10,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:10,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:10,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:10,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:10,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:10,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-25 14:48:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:10,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:10,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:10,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:10,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:10,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:48:10,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:10,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:10,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:10,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:10,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:10,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:10,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-25 14:48:10,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:10,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:10,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:10,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:10,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:10,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:48:10,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:10,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:10,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:10,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:10,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:10,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:10,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-25 14:48:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:10,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:10,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:10,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:10,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:10,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:48:10,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:10,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:10,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:10,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:10,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:10,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:10,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-25 14:48:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:10,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:10,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:10,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:10,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:10,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:48:10,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:10,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:10,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:10,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:10,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:10,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:10,235 INFO L134 CoverageAnalysis]: Checked inductivity of 584 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-09-25 14:48:10,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31172648] [2020-09-25 14:48:10,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:48:10,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 14:48:10,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292812920] [2020-09-25 14:48:10,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 14:48:10,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:48:10,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 14:48:10,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:48:10,238 INFO L87 Difference]: Start difference. First operand 398 states and 529 transitions. Second operand 11 states. [2020-09-25 14:48:10,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:48:10,551 INFO L93 Difference]: Finished difference Result 432 states and 566 transitions. [2020-09-25 14:48:10,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:48:10,551 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 136 [2020-09-25 14:48:10,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:48:10,555 INFO L225 Difference]: With dead ends: 432 [2020-09-25 14:48:10,555 INFO L226 Difference]: Without dead ends: 430 [2020-09-25 14:48:10,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-09-25 14:48:10,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2020-09-25 14:48:10,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 410. [2020-09-25 14:48:10,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2020-09-25 14:48:10,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 542 transitions. [2020-09-25 14:48:10,582 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 542 transitions. Word has length 136 [2020-09-25 14:48:10,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:48:10,582 INFO L479 AbstractCegarLoop]: Abstraction has 410 states and 542 transitions. [2020-09-25 14:48:10,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 14:48:10,582 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 542 transitions. [2020-09-25 14:48:10,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 14:48:10,585 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:48:10,585 INFO L422 BasicCegarLoop]: trace histogram [20, 19, 19, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:10,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-25 14:48:10,585 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:48:10,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:48:10,586 INFO L82 PathProgramCache]: Analyzing trace with hash 362381850, now seen corresponding path program 1 times [2020-09-25 14:48:10,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:48:10,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743922902] [2020-09-25 14:48:10,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:48:10,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:10,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:10,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:10,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:10,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:11,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:11,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:15,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:15,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-25 14:48:15,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:48:15,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 14:48:15,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:15,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:15,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:48:15,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-09-25 14:48:15,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 14:48:15,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:48:15,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:48:15,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:15,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:15,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:15,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:48:15,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:15,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:48:15,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:15,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:15,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:48:15,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:15,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:48:15,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:15,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:48:15,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:15,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:15,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:15,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:15,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:15,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:48:15,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:15,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:15,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:48:15,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:15,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:48:15,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:15,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 14:48:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:15,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:15,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:15,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:15,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:15,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:48:15,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:15,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:15,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:48:15,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:15,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:48:15,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:15,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 14:48:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:15,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:15,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:15,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:15,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:15,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:48:15,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:15,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:15,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:48:15,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:15,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:48:15,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:15,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 14:48:15,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:15,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:15,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:15,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:15,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:15,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:48:15,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:15,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:15,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:48:15,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:15,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:48:15,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:15,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 14:48:15,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:15,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:15,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:15,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:15,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:15,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:48:15,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:15,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:15,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:48:15,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:15,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:48:15,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:15,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 14:48:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:15,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:15,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:15,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:15,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:15,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:48:15,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:15,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:15,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:48:15,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:15,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:48:15,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:15,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-25 14:48:15,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:15,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:15,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:15,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:15,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:15,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:48:15,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:15,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:15,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:48:15,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:15,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:48:15,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:15,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-25 14:48:15,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:15,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:15,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:15,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:15,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:15,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:48:15,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:15,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:15,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:48:15,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:15,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:48:15,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:15,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 14:48:15,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:15,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:15,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:15,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:15,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:15,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:48:15,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:15,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:15,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:15,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:15,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:15,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:15,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-25 14:48:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:15,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:15,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:15,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:15,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:15,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:48:15,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:48:15,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:15,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:15,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:15,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:15,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:15,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:15,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-25 14:48:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:15,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:15,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:15,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:15,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:15,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:48:15,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:15,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:15,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:15,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:15,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:15,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:15,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 14:48:15,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:15,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:15,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:15,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:15,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:15,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:48:15,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:15,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:15,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:15,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:15,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:15,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:15,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-25 14:48:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:15,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:15,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:15,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:15,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:15,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:48:15,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:15,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:15,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:15,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:15,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:15,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:15,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-25 14:48:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:15,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:15,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:15,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:15,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:15,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:48:15,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:15,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:15,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:15,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:15,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:15,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:15,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-25 14:48:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:15,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:15,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:15,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:15,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:15,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:48:15,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:15,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:15,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:15,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:15,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:15,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:15,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-25 14:48:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:15,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:15,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:15,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:15,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:15,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:48:15,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:15,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:15,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:15,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:15,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:15,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:15,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-25 14:48:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:15,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:15,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:15,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:15,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:15,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:48:15,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:15,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:15,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:15,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:15,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:15,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:15,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-25 14:48:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:15,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:15,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:15,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:15,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:15,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:48:15,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:15,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:15,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:15,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:15,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:15,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:15,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-25 14:48:15,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:15,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:15,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:48:15,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 14:48:15,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:48:15,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:48:15,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:48:15,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:48:15,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:48:15,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:48:15,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:48:15,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:48:15,899 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 68 proven. 34 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2020-09-25 14:48:15,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743922902] [2020-09-25 14:48:15,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:48:15,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 14:48:15,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193902219] [2020-09-25 14:48:15,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 14:48:15,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:48:15,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 14:48:15,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:48:15,902 INFO L87 Difference]: Start difference. First operand 410 states and 542 transitions. Second operand 11 states. [2020-09-25 14:48:16,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:48:16,411 INFO L93 Difference]: Finished difference Result 480 states and 640 transitions. [2020-09-25 14:48:16,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:48:16,412 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 151 [2020-09-25 14:48:16,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:48:16,415 INFO L225 Difference]: With dead ends: 480 [2020-09-25 14:48:16,415 INFO L226 Difference]: Without dead ends: 476 [2020-09-25 14:48:16,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2020-09-25 14:48:16,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-09-25 14:48:16,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 430. [2020-09-25 14:48:16,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-09-25 14:48:16,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 568 transitions. [2020-09-25 14:48:16,453 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 568 transitions. Word has length 151 [2020-09-25 14:48:16,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:48:16,454 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 568 transitions. [2020-09-25 14:48:16,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 14:48:16,454 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 568 transitions. [2020-09-25 14:48:16,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 14:48:16,456 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:48:16,457 INFO L422 BasicCegarLoop]: trace histogram [20, 19, 19, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:16,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-25 14:48:16,457 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:48:16,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:48:16,457 INFO L82 PathProgramCache]: Analyzing trace with hash -978309232, now seen corresponding path program 2 times [2020-09-25 14:48:16,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:48:16,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331518506] [2020-09-25 14:48:16,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:48:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:48:16,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:16,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:16,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:16,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:48:17,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking...