/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=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:58:24,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:58:24,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:58:24,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:58:24,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:58:24,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:58:24,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:58:24,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:58:24,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:58:24,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:58:24,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:58:24,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:58:24,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:58:24,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:58:24,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:58:24,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:58:24,418 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:58:24,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:58:24,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:58:24,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:58:24,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:58:24,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:58:24,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:58:24,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:58:24,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:58:24,444 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:58:24,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:58:24,445 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:58:24,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:58:24,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:58:24,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:58:24,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:58:24,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:58:24,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:58:24,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:58:24,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:58:24,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:58:24,455 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:58:24,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:58:24,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:58:24,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:58:24,460 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 09:58:24,504 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:58:24,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:58:24,507 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:58:24,507 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:58:24,508 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:58:24,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:58:24,508 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:58:24,509 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:58:24,509 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:58:24,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:58:24,510 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:58:24,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:58:24,510 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:58:24,511 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:58:24,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:58:24,512 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:58:24,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:58:24,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:58:24,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:58:24,513 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:58:24,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:58:24,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:58:24,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:58:24,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:58:24,514 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:58:24,514 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:58:24,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:58:24,515 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:58:24,515 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:58:24,515 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 09:58:25,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:58:25,101 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:58:25,108 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:58:25,110 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:58:25,110 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:58:25,111 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c [2020-09-25 09:58:25,201 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/780f5cf44/4f0571351a884143a0230b6c16eac089/FLAG1182f53a3 [2020-09-25 09:58:25,704 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:58:25,705 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c [2020-09-25 09:58:25,716 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/780f5cf44/4f0571351a884143a0230b6c16eac089/FLAG1182f53a3 [2020-09-25 09:58:26,037 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/780f5cf44/4f0571351a884143a0230b6c16eac089 [2020-09-25 09:58:26,055 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:58:26,064 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:58:26,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:58:26,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:58:26,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:58:26,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:58:26" (1/1) ... [2020-09-25 09:58:26,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@508126be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:26, skipping insertion in model container [2020-09-25 09:58:26,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:58:26" (1/1) ... [2020-09-25 09:58:26,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:58:26,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:58:26,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:58:26,490 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:58:26,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:58:26,634 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:58:26,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:26 WrapperNode [2020-09-25 09:58:26,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:58:26,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:58:26,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:58:26,637 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:58:26,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:26" (1/1) ... [2020-09-25 09:58:26,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:26" (1/1) ... [2020-09-25 09:58:26,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:26" (1/1) ... [2020-09-25 09:58:26,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:26" (1/1) ... [2020-09-25 09:58:26,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:26" (1/1) ... [2020-09-25 09:58:26,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:26" (1/1) ... [2020-09-25 09:58:26,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:26" (1/1) ... [2020-09-25 09:58:26,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:58:26,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:58:26,687 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:58:26,687 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:58:26,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:58:26,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:58:26,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:58:26,774 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 09:58:26,774 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-09-25 09:58:26,774 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-09-25 09:58:26,774 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-09-25 09:58:26,774 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:58:26,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:58:26,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 09:58:26,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 09:58:26,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 09:58:26,775 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-09-25 09:58:26,775 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-09-25 09:58:26,776 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-09-25 09:58:26,776 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:58:26,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:58:26,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:58:27,329 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:58:27,329 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 09:58:27,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:58:27 BoogieIcfgContainer [2020-09-25 09:58:27,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:58:27,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:58:27,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:58:27,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:58:27,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:58:26" (1/3) ... [2020-09-25 09:58:27,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61f0ff2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:58:27, skipping insertion in model container [2020-09-25 09:58:27,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:58:26" (2/3) ... [2020-09-25 09:58:27,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61f0ff2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:58:27, skipping insertion in model container [2020-09-25 09:58:27,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:58:27" (3/3) ... [2020-09-25 09:58:27,351 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2020-09-25 09:58:27,362 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:58:27,372 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:58:27,392 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:58:27,421 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:58:27,421 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:58:27,421 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:58:27,421 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:58:27,422 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:58:27,422 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:58:27,422 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:58:27,422 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:58:27,448 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states. [2020-09-25 09:58:27,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-25 09:58:27,462 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:27,463 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:27,464 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:27,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:27,470 INFO L82 PathProgramCache]: Analyzing trace with hash -2062280112, now seen corresponding path program 1 times [2020-09-25 09:58:27,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:27,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753407393] [2020-09-25 09:58:27,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:27,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:27,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:28,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:28,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:29,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:29,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 09:58:29,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:58:29,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1806 [2020-09-25 09:58:29,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:29,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:29,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:58:29,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 09:58:29,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 09:58:29,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 09:58:29,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:58:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:29,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:29,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:29,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:58:29,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:29,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:58:29,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:29,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:29,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:29,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:29,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:29,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:29,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 09:58:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:29,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:29,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:29,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:29,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:29,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 09:58:29,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:29,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:29,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:58:29,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:29,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:58:29,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:29,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 09:58:29,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:29,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:29,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:29,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:29,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:29,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:58:29,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 09:58:29,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:29,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:29,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:58:29,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:29,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:58:29,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:29,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 09:58:29,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:29,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:29,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:29,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:29,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:29,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:58:29,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:29,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:29,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:58:29,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:29,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:58:29,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:29,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 09:58:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:29,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:29,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:29,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:29,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:29,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:58:29,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:29,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:29,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:58:29,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:29,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:58:29,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:29,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 09:58:29,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:29,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:29,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:29,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 09:58:29,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:29,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:58:29,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:29,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:29,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:58:29,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:29,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 09:58:29,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:29,782 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-09-25 09:58:29,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753407393] [2020-09-25 09:58:29,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:58:29,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:58:29,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092455540] [2020-09-25 09:58:29,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:58:29,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:58:29,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:58:29,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:58:29,817 INFO L87 Difference]: Start difference. First operand 152 states. Second operand 6 states. [2020-09-25 09:58:30,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:58:30,022 INFO L93 Difference]: Finished difference Result 278 states and 352 transitions. [2020-09-25 09:58:30,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:58:30,024 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2020-09-25 09:58:30,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:58:30,044 INFO L225 Difference]: With dead ends: 278 [2020-09-25 09:58:30,044 INFO L226 Difference]: Without dead ends: 156 [2020-09-25 09:58:30,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 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 09:58:30,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-09-25 09:58:30,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 151. [2020-09-25 09:58:30,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-09-25 09:58:30,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 181 transitions. [2020-09-25 09:58:30,127 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 181 transitions. Word has length 100 [2020-09-25 09:58:30,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:58:30,128 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 181 transitions. [2020-09-25 09:58:30,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:58:30,129 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 181 transitions. [2020-09-25 09:58:30,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-25 09:58:30,136 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:30,136 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:30,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:58:30,137 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:30,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:30,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1435857694, now seen corresponding path program 1 times [2020-09-25 09:58:30,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:30,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319223201] [2020-09-25 09:58:30,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:30,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:30,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:30,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:30,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:30,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:32,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:32,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:35,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:35,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 09:58:35,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:58:35,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 09:58:35,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:35,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:35,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 09:58:35,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-25 09:58:35,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 09:58:35,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:58:35,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:58:35,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:35,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:35,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:35,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:58:35,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:35,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:58:35,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:35,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:35,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:35,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:35,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:35,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:35,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 09:58:35,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:35,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:35,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:35,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:35,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:35,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:58:35,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:35,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:35,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:35,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:35,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:35,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:35,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 09:58:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:35,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:35,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:35,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:35,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:35,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:58:35,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 09:58:35,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:35,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:35,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:58:35,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 09:58:35,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:58:35,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:35,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 09:58:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:35,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:35,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:35,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:35,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:35,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 09:58:35,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:35,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:35,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:58:35,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:35,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:58:35,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:35,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 09:58:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:35,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:35,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:35,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:35,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:35,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 09:58:35,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:35,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:35,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:58:35,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:35,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:58:35,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:35,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 09:58:35,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:35,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:35,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:35,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:35,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 09:58:35,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:58:35,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 09:58:35,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:35,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:35,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:58:35,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 09:58:35,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 09:58:35,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:35,544 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 09:58:35,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319223201] [2020-09-25 09:58:35,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:58:35,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 09:58:35,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223145200] [2020-09-25 09:58:35,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 09:58:35,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:58:35,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 09:58:35,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:58:35,550 INFO L87 Difference]: Start difference. First operand 151 states and 181 transitions. Second operand 11 states. [2020-09-25 09:58:36,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:58:36,208 INFO L93 Difference]: Finished difference Result 423 states and 540 transitions. [2020-09-25 09:58:36,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 09:58:36,209 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-09-25 09:58:36,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:58:36,214 INFO L225 Difference]: With dead ends: 423 [2020-09-25 09:58:36,215 INFO L226 Difference]: Without dead ends: 303 [2020-09-25 09:58:36,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2020-09-25 09:58:36,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-09-25 09:58:36,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 209. [2020-09-25 09:58:36,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-09-25 09:58:36,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 261 transitions. [2020-09-25 09:58:36,283 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 261 transitions. Word has length 104 [2020-09-25 09:58:36,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:58:36,284 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 261 transitions. [2020-09-25 09:58:36,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 09:58:36,284 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 261 transitions. [2020-09-25 09:58:36,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-25 09:58:36,288 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:36,289 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:36,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:58:36,289 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:36,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:36,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1576283257, now seen corresponding path program 1 times [2020-09-25 09:58:36,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:36,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976116890] [2020-09-25 09:58:36,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:36,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:36,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:36,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:36,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 09:58:36,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:58:36,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-09-25 09:58:36,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:36,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:36,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:58:36,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 09:58:36,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:58:36,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:36,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:58:36,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:36,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:36,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:36,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:58:36,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:36,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:58:36,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:36,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:36,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:36,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:36,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:36,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:58:36,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 09:58:36,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:36,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:36,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:36,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:36,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:36,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:58:36,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:36,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:36,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:36,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:36,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:36,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:58:36,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 09:58:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:36,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:36,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:36,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:58:36,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:36,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 09:58:36,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:36,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:36,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:58:36,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 09:58:36,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 09:58:36,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:36,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 09:58:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:36,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:36,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:36,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:36,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:36,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:58:36,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:36,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:36,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:36,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:58:36,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:36,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:36,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 09:58:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:36,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:36,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:36,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:36,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:36,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:58:36,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:36,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:36,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:36,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:58:36,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:36,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:58:36,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-25 09:58:36,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:36,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:36,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:36,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 09:58:36,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:36,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:58:36,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:36,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:36,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:36,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:58:36,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:36,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:58:36,878 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 09:58:36,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976116890] [2020-09-25 09:58:36,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:58:36,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 09:58:36,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659493888] [2020-09-25 09:58:36,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:58:36,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:58:36,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:58:36,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:58:36,881 INFO L87 Difference]: Start difference. First operand 209 states and 261 transitions. Second operand 4 states. [2020-09-25 09:58:36,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:58:36,996 INFO L93 Difference]: Finished difference Result 402 states and 524 transitions. [2020-09-25 09:58:36,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 09:58:36,997 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2020-09-25 09:58:36,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:58:37,001 INFO L225 Difference]: With dead ends: 402 [2020-09-25 09:58:37,001 INFO L226 Difference]: Without dead ends: 240 [2020-09-25 09:58:37,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:58:37,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-09-25 09:58:37,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 224. [2020-09-25 09:58:37,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-09-25 09:58:37,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 289 transitions. [2020-09-25 09:58:37,054 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 289 transitions. Word has length 107 [2020-09-25 09:58:37,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:58:37,055 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 289 transitions. [2020-09-25 09:58:37,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:58:37,055 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 289 transitions. [2020-09-25 09:58:37,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-09-25 09:58:37,058 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:37,058 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:37,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:58:37,059 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:37,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:37,059 INFO L82 PathProgramCache]: Analyzing trace with hash 962611898, now seen corresponding path program 1 times [2020-09-25 09:58:37,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:37,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214444149] [2020-09-25 09:58:37,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:37,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:37,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:37,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:37,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:37,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 09:58:37,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:58:37,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-09-25 09:58:37,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:37,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:37,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:58:37,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-09-25 09:58:37,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:58:37,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:37,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:58:37,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:37,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:37,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:37,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:58:37,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:37,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:58:37,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:37,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:37,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:37,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:37,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:37,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:58:37,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 09:58:37,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:37,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:37,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:37,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:37,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:37,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:58:37,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:37,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:37,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:37,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:37,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:37,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:58:37,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 09:58:37,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:37,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:37,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:37,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:37,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 09:58:37,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:58:37,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 09:58:37,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:37,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:37,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:58:37,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 09:58:37,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:58:37,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:37,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 09:58:37,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:37,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:37,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:37,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:37,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:37,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:58:37,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:37,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:37,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:37,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:37,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:37,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:37,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 09:58:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:37,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:37,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:37,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:37,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:37,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:58:37,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:37,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:37,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:37,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:37,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:37,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:37,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-25 09:58:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:37,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:37,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:37,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 09:58:37,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:37,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:58:37,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:37,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:37,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:58:37,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:37,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 09:58:37,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:37,673 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 09:58:37,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214444149] [2020-09-25 09:58:37,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:58:37,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:58:37,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761691342] [2020-09-25 09:58:37,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:58:37,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:58:37,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:58:37,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:58:37,676 INFO L87 Difference]: Start difference. First operand 224 states and 289 transitions. Second operand 8 states. [2020-09-25 09:58:37,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:58:37,875 INFO L93 Difference]: Finished difference Result 417 states and 547 transitions. [2020-09-25 09:58:37,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 09:58:37,876 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 109 [2020-09-25 09:58:37,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:58:37,878 INFO L225 Difference]: With dead ends: 417 [2020-09-25 09:58:37,879 INFO L226 Difference]: Without dead ends: 256 [2020-09-25 09:58:37,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:58:37,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-09-25 09:58:37,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 235. [2020-09-25 09:58:37,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-09-25 09:58:37,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 302 transitions. [2020-09-25 09:58:37,899 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 302 transitions. Word has length 109 [2020-09-25 09:58:37,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:58:37,900 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 302 transitions. [2020-09-25 09:58:37,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:58:37,900 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 302 transitions. [2020-09-25 09:58:37,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 09:58:37,902 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:37,903 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:37,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:58:37,903 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:37,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:37,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1742673951, now seen corresponding path program 1 times [2020-09-25 09:58:37,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:37,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887217123] [2020-09-25 09:58:37,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:37,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:38,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:38,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:38,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 09:58:38,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:58:38,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 550 [2020-09-25 09:58:38,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:38,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:38,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:58:38,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 09:58:38,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 09:58:38,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:38,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:58:38,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:38,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:38,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:38,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:58:38,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:38,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:58:38,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:38,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:38,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:38,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:38,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:38,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:38,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 09:58:38,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:38,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:38,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:38,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:38,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:38,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:58:38,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:38,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:38,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:38,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:38,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:38,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:38,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 09:58:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:38,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:38,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:38,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 09:58:38,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:38,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 09:58:38,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:38,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:38,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:58:38,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 09:58:38,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 09:58:38,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:38,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 09:58:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:38,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:38,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:38,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:38,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:38,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:58:38,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:38,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:38,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:38,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:58:38,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:38,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:38,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 09:58:38,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:38,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:38,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:38,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:38,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:38,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:58:38,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:38,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:38,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:38,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:58:38,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:38,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:38,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 09:58:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:38,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:38,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:38,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 09:58:38,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:38,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:58:38,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:38,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:38,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:38,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:58:38,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:38,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:38,609 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 09:58:38,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887217123] [2020-09-25 09:58:38,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:58:38,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:58:38,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121466201] [2020-09-25 09:58:38,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:58:38,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:58:38,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:58:38,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:58:38,612 INFO L87 Difference]: Start difference. First operand 235 states and 302 transitions. Second operand 5 states. [2020-09-25 09:58:38,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:58:38,723 INFO L93 Difference]: Finished difference Result 448 states and 590 transitions. [2020-09-25 09:58:38,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:58:38,724 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-09-25 09:58:38,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:58:38,727 INFO L225 Difference]: With dead ends: 448 [2020-09-25 09:58:38,727 INFO L226 Difference]: Without dead ends: 269 [2020-09-25 09:58:38,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:58:38,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-09-25 09:58:38,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 245. [2020-09-25 09:58:38,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-09-25 09:58:38,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 315 transitions. [2020-09-25 09:58:38,746 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 315 transitions. Word has length 112 [2020-09-25 09:58:38,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:58:38,746 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 315 transitions. [2020-09-25 09:58:38,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:58:38,746 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 315 transitions. [2020-09-25 09:58:38,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 09:58:38,748 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:38,749 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:38,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:58:38,749 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:38,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:38,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1799184303, now seen corresponding path program 1 times [2020-09-25 09:58:38,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:38,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303957341] [2020-09-25 09:58:38,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:38,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:38,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:39,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:39,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 09:58:39,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:58:39,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 505 [2020-09-25 09:58:39,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:39,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:39,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:58:39,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 09:58:39,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 09:58:39,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:39,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:58:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:39,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:39,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:39,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:58:39,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:39,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:58:39,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:39,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:39,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:39,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:39,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:39,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:39,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 09:58:39,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:39,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:39,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:39,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:39,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:39,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:58:39,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:39,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:39,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:39,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:39,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:39,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:39,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 09:58:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:39,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:39,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:39,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 09:58:39,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:39,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 09:58:39,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:39,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:39,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:58:39,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 09:58:39,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 09:58:39,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:39,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 09:58:39,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:39,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:39,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:39,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:39,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:39,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:58:39,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:39,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:39,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:39,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:58:39,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:39,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:39,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 09:58:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:39,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:39,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:39,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:39,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:39,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:58:39,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:39,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:39,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:39,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:58:39,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:39,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:39,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 09:58:39,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:39,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:39,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:39,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 09:58:39,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:39,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:58:39,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:39,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:39,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:39,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:58:39,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:39,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:39,466 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 09:58:39,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303957341] [2020-09-25 09:58:39,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:58:39,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:58:39,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389559931] [2020-09-25 09:58:39,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:58:39,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:58:39,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:58:39,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:58:39,471 INFO L87 Difference]: Start difference. First operand 245 states and 315 transitions. Second operand 5 states. [2020-09-25 09:58:39,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:58:39,650 INFO L93 Difference]: Finished difference Result 464 states and 617 transitions. [2020-09-25 09:58:39,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:58:39,651 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-09-25 09:58:39,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:58:39,654 INFO L225 Difference]: With dead ends: 464 [2020-09-25 09:58:39,654 INFO L226 Difference]: Without dead ends: 263 [2020-09-25 09:58:39,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:58:39,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-09-25 09:58:39,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 236. [2020-09-25 09:58:39,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-09-25 09:58:39,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 301 transitions. [2020-09-25 09:58:39,680 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 301 transitions. Word has length 112 [2020-09-25 09:58:39,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:58:39,681 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 301 transitions. [2020-09-25 09:58:39,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:58:39,682 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 301 transitions. [2020-09-25 09:58:39,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-09-25 09:58:39,686 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:39,687 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:39,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:58:39,687 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:39,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:39,688 INFO L82 PathProgramCache]: Analyzing trace with hash -2062292441, now seen corresponding path program 2 times [2020-09-25 09:58:39,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:39,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341759905] [2020-09-25 09:58:39,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:39,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:39,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:39,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:40,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:40,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 09:58:40,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:58:40,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 668 [2020-09-25 09:58:40,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:40,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:40,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:58:40,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 09:58:40,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 09:58:40,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:40,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:58:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:40,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:40,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:40,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:58:40,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:40,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:58:40,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:40,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:40,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:40,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:40,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:40,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:40,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 09:58:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:40,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:40,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:40,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:40,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:40,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:58:40,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:40,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:40,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:40,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:40,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:40,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:40,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 09:58:40,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:40,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:40,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:40,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 09:58:40,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:40,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 09:58:40,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:40,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:40,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:58:40,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 09:58:40,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 09:58:40,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:40,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 09:58:40,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:40,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:40,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:40,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:40,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:40,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:58:40,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:40,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:40,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:40,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:58:40,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:40,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:40,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-25 09:58:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:40,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:40,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:40,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:40,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:40,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:58:40,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:40,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:40,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:40,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:58:40,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:40,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:40,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 09:58:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:40,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:40,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:40,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 09:58:40,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:40,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:58:40,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:40,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:40,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:40,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:58:40,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:40,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:40,559 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 09:58:40,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341759905] [2020-09-25 09:58:40,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:58:40,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:58:40,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280749857] [2020-09-25 09:58:40,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:58:40,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:58:40,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:58:40,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:58:40,562 INFO L87 Difference]: Start difference. First operand 236 states and 301 transitions. Second operand 6 states. [2020-09-25 09:58:40,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:58:40,706 INFO L93 Difference]: Finished difference Result 458 states and 610 transitions. [2020-09-25 09:58:40,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:58:40,707 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2020-09-25 09:58:40,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:58:40,709 INFO L225 Difference]: With dead ends: 458 [2020-09-25 09:58:40,710 INFO L226 Difference]: Without dead ends: 274 [2020-09-25 09:58:40,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:58:40,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-09-25 09:58:40,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 246. [2020-09-25 09:58:40,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-09-25 09:58:40,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 314 transitions. [2020-09-25 09:58:40,729 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 314 transitions. Word has length 117 [2020-09-25 09:58:40,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:58:40,729 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 314 transitions. [2020-09-25 09:58:40,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:58:40,730 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 314 transitions. [2020-09-25 09:58:40,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-09-25 09:58:40,732 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:40,733 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:40,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 09:58:40,733 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:40,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:40,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1309183399, now seen corresponding path program 1 times [2020-09-25 09:58:40,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:40,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466914283] [2020-09-25 09:58:40,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:40,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:40,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:40,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:41,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:41,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 09:58:41,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:58:41,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1024 [2020-09-25 09:58:41,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:41,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:41,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:58:41,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 09:58:41,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 09:58:41,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:41,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:58:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:41,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:41,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:41,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:58:41,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:41,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:58:41,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:41,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:41,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:41,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:41,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:41,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:41,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 09:58:41,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:41,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:41,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:41,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:41,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:41,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:58:41,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:41,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:41,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:41,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:41,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:41,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:41,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 09:58:41,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:41,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:41,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:41,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 09:58:41,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:41,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 09:58:41,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:41,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:41,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:58:41,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 09:58:41,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 09:58:41,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:41,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 09:58:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:41,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:41,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:41,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:41,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:41,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:58:41,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:41,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:41,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:41,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:58:41,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:41,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:41,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-25 09:58:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:41,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:41,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:41,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:41,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:41,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:58:41,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:41,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:41,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:41,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:58:41,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:41,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:41,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 09:58:41,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:41,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:41,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:41,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 09:58:41,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:41,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:58:41,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:41,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:41,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:41,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:58:41,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:41,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:41,965 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 09:58:41,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466914283] [2020-09-25 09:58:41,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:58:41,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:58:41,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327245152] [2020-09-25 09:58:41,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:58:41,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:58:41,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:58:41,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:58:41,968 INFO L87 Difference]: Start difference. First operand 246 states and 314 transitions. Second operand 6 states. [2020-09-25 09:58:42,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:58:42,206 INFO L93 Difference]: Finished difference Result 469 states and 627 transitions. [2020-09-25 09:58:42,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 09:58:42,207 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2020-09-25 09:58:42,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:58:42,210 INFO L225 Difference]: With dead ends: 469 [2020-09-25 09:58:42,210 INFO L226 Difference]: Without dead ends: 278 [2020-09-25 09:58:42,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:58:42,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-09-25 09:58:42,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 246. [2020-09-25 09:58:42,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-09-25 09:58:42,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 313 transitions. [2020-09-25 09:58:42,230 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 313 transitions. Word has length 117 [2020-09-25 09:58:42,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:58:42,231 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 313 transitions. [2020-09-25 09:58:42,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:58:42,231 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 313 transitions. [2020-09-25 09:58:42,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 09:58:42,233 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:42,233 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:42,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 09:58:42,234 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:42,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:42,235 INFO L82 PathProgramCache]: Analyzing trace with hash -273081057, now seen corresponding path program 3 times [2020-09-25 09:58:42,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:42,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536944860] [2020-09-25 09:58:42,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:42,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:42,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:43,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:43,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-25 09:58:43,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:58:43,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 753 [2020-09-25 09:58:43,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:43,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:43,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:58:43,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 09:58:43,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 09:58:43,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:43,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:58:43,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:43,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:43,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:43,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:58:43,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:43,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:58:43,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:43,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:43,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:43,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:43,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:43,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:43,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 09:58:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:43,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:43,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:43,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:43,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:43,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:58:43,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:43,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:43,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:43,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:43,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:43,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:43,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 09:58:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:43,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:43,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:43,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 09:58:43,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:43,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 09:58:43,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:43,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:43,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:58:43,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 09:58:43,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 09:58:43,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:43,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 09:58:43,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:43,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:43,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:43,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:43,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:43,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:58:43,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:43,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:43,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:43,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:58:43,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:43,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:43,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-25 09:58:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:43,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:43,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:43,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:43,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:43,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:58:43,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:43,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:43,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:43,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:58:43,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:43,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:43,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-25 09:58:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:43,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:43,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:43,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 09:58:43,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:43,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:58:43,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:43,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:43,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:43,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:58:43,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:43,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:43,237 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 09:58:43,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536944860] [2020-09-25 09:58:43,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:58:43,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:58:43,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375896869] [2020-09-25 09:58:43,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:58:43,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:58:43,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:58:43,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:58:43,239 INFO L87 Difference]: Start difference. First operand 246 states and 313 transitions. Second operand 7 states. [2020-09-25 09:58:43,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:58:43,375 INFO L93 Difference]: Finished difference Result 487 states and 655 transitions. [2020-09-25 09:58:43,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:58:43,376 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-09-25 09:58:43,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:58:43,379 INFO L225 Difference]: With dead ends: 487 [2020-09-25 09:58:43,379 INFO L226 Difference]: Without dead ends: 298 [2020-09-25 09:58:43,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:58:43,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-09-25 09:58:43,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 256. [2020-09-25 09:58:43,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-09-25 09:58:43,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 326 transitions. [2020-09-25 09:58:43,400 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 326 transitions. Word has length 122 [2020-09-25 09:58:43,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:58:43,400 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 326 transitions. [2020-09-25 09:58:43,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:58:43,400 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 326 transitions. [2020-09-25 09:58:43,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 09:58:43,403 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:43,403 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:43,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 09:58:43,404 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:43,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:43,404 INFO L82 PathProgramCache]: Analyzing trace with hash 480027985, now seen corresponding path program 2 times [2020-09-25 09:58:43,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:43,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425021937] [2020-09-25 09:58:43,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:43,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:43,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:43,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:44,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:44,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-25 09:58:44,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:58:44,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 804 [2020-09-25 09:58:44,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:44,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:44,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:58:44,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 09:58:44,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 09:58:44,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:44,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:58:44,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:44,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:44,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:44,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:58:44,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:44,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:58:44,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:44,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:44,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:44,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:44,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:44,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:44,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 09:58:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:44,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:44,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:44,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:44,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:44,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:58:44,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:44,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:44,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:44,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:44,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:44,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:44,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 09:58:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:44,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:44,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:44,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 09:58:44,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:44,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 09:58:44,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:44,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:44,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:58:44,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 09:58:44,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 09:58:44,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:44,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 09:58:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:44,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:44,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:44,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:44,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:44,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:58:44,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:44,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:44,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:44,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:58:44,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:44,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:44,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-25 09:58:44,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:44,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:44,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:44,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:44,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:44,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:58:44,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:44,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:44,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:44,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:58:44,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:44,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:44,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-25 09:58:44,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:44,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:44,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:44,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 09:58:44,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:44,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:58:44,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:44,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:44,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:44,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:58:44,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:44,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:44,489 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 7 proven. 29 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 09:58:44,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425021937] [2020-09-25 09:58:44,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:58:44,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:58:44,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786126114] [2020-09-25 09:58:44,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:58:44,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:58:44,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:58:44,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:58:44,493 INFO L87 Difference]: Start difference. First operand 256 states and 326 transitions. Second operand 7 states. [2020-09-25 09:58:44,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:58:44,817 INFO L93 Difference]: Finished difference Result 489 states and 656 transitions. [2020-09-25 09:58:44,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:58:44,819 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-09-25 09:58:44,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:58:44,822 INFO L225 Difference]: With dead ends: 489 [2020-09-25 09:58:44,822 INFO L226 Difference]: Without dead ends: 293 [2020-09-25 09:58:44,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:58:44,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-09-25 09:58:44,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 256. [2020-09-25 09:58:44,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-09-25 09:58:44,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 325 transitions. [2020-09-25 09:58:44,848 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 325 transitions. Word has length 122 [2020-09-25 09:58:44,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:58:44,848 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 325 transitions. [2020-09-25 09:58:44,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:58:44,848 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 325 transitions. [2020-09-25 09:58:44,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 09:58:44,851 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:44,852 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:44,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 09:58:44,852 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:44,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:44,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1572144423, now seen corresponding path program 4 times [2020-09-25 09:58:44,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:44,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995908614] [2020-09-25 09:58:44,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:44,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:45,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:45,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:45,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 09:58:45,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:58:45,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 923 [2020-09-25 09:58:45,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:45,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:45,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:58:45,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 09:58:45,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 09:58:45,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:45,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:58:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:45,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:45,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:45,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:58:45,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:45,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:58:45,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:45,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:45,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:45,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:45,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:45,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:45,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 09:58:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:45,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:45,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:45,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:45,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:45,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:58:45,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:45,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:45,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:45,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:45,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:45,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 09:58:45,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 09:58:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:45,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:45,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:45,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 09:58:45,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:45,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 09:58:45,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:45,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:45,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:58:45,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 09:58:45,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 09:58:45,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:45,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-25 09:58:45,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:45,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:45,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:45,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:45,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:45,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:58:45,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:45,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:45,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:45,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:58:45,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:45,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:45,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 09:58:45,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:45,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:45,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:45,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:45,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:45,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:58:45,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:45,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:45,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:45,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:58:45,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:45,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:46,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 09:58:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:46,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:46,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:46,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 09:58:46,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:46,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:58:46,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:46,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:46,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:46,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:58:46,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:46,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:46,027 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 6 proven. 50 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 09:58:46,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995908614] [2020-09-25 09:58:46,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:58:46,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:58:46,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693895519] [2020-09-25 09:58:46,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:58:46,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:58:46,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:58:46,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:58:46,029 INFO L87 Difference]: Start difference. First operand 256 states and 325 transitions. Second operand 8 states. [2020-09-25 09:58:46,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:58:46,215 INFO L93 Difference]: Finished difference Result 508 states and 688 transitions. [2020-09-25 09:58:46,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:58:46,216 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 127 [2020-09-25 09:58:46,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:58:46,218 INFO L225 Difference]: With dead ends: 508 [2020-09-25 09:58:46,219 INFO L226 Difference]: Without dead ends: 314 [2020-09-25 09:58:46,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-09-25 09:58:46,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-09-25 09:58:46,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 266. [2020-09-25 09:58:46,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-09-25 09:58:46,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 338 transitions. [2020-09-25 09:58:46,244 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 338 transitions. Word has length 127 [2020-09-25 09:58:46,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:58:46,245 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 338 transitions. [2020-09-25 09:58:46,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:58:46,245 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 338 transitions. [2020-09-25 09:58:46,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 09:58:46,248 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:46,248 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:46,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 09:58:46,249 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:46,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:46,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1969713831, now seen corresponding path program 3 times [2020-09-25 09:58:46,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:46,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969972386] [2020-09-25 09:58:46,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:46,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:46,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:47,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:47,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 09:58:47,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:58:47,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 994 [2020-09-25 09:58:47,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:47,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:47,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:58:47,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 09:58:47,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 09:58:47,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:47,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:58:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:47,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:47,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:47,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:58:47,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:47,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:58:47,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:47,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:47,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:47,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:47,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:47,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:47,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 09:58:47,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:47,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:47,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:47,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:47,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:47,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:58:47,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:47,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:47,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:47,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:47,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:47,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:47,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 09:58:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:47,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:47,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:47,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 09:58:47,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:47,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 09:58:47,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:47,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:47,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:58:47,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 09:58:47,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 09:58:47,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:47,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-25 09:58:47,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:47,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:47,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:47,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:47,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:47,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:58:47,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:47,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:47,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:47,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:58:47,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:47,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:47,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 09:58:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:47,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:47,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:47,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:47,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:47,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:58:47,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:47,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:47,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:47,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:58:47,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:47,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:58:47,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 09:58:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:47,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:47,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:47,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 09:58:47,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:47,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:58:47,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:47,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:47,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:47,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:58:47,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:47,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:58:47,577 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 7 proven. 44 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 09:58:47,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969972386] [2020-09-25 09:58:47,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:58:47,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:58:47,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306003813] [2020-09-25 09:58:47,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:58:47,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:58:47,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:58:47,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:58:47,579 INFO L87 Difference]: Start difference. First operand 266 states and 338 transitions. Second operand 8 states. [2020-09-25 09:58:48,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:58:48,008 INFO L93 Difference]: Finished difference Result 509 states and 685 transitions. [2020-09-25 09:58:48,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 09:58:48,009 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 127 [2020-09-25 09:58:48,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:58:48,013 INFO L225 Difference]: With dead ends: 509 [2020-09-25 09:58:48,013 INFO L226 Difference]: Without dead ends: 308 [2020-09-25 09:58:48,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-09-25 09:58:48,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-09-25 09:58:48,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 266. [2020-09-25 09:58:48,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-09-25 09:58:48,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 337 transitions. [2020-09-25 09:58:48,039 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 337 transitions. Word has length 127 [2020-09-25 09:58:48,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:58:48,039 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 337 transitions. [2020-09-25 09:58:48,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:58:48,039 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 337 transitions. [2020-09-25 09:58:48,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 09:58:48,041 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:48,042 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:48,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 09:58:48,042 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:48,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:48,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1720771103, now seen corresponding path program 5 times [2020-09-25 09:58:48,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:48,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323233288] [2020-09-25 09:58:48,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:48,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:48,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:49,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:49,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 09:58:49,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:58:49,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1026 [2020-09-25 09:58:49,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:49,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:49,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:58:49,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 09:58:49,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 09:58:49,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:58:49,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:58:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:49,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:49,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:49,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:58:49,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:49,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:58:49,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:49,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:49,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:49,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:49,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:49,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:49,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 09:58:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:49,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:49,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:49,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:49,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:49,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:58:49,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:49,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:49,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:49,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:49,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:49,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:49,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 09:58:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:49,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:49,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:49,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 09:58:49,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:49,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-25 09:58:49,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:49,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:49,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:58:49,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 09:58:49,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 09:58:49,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:49,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 09:58:49,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:49,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:49,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:49,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:49,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:49,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:58:49,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:49,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:49,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:49,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:58:49,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:49,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:49,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 09:58:49,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:49,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:49,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:49,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:49,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:49,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:58:49,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:49,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:49,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:49,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:58:49,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:49,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:49,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 09:58:49,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:49,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:49,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:49,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 09:58:49,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:49,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:58:49,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:49,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:49,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:49,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:58:49,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:49,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:49,352 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 6 proven. 72 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 09:58:49,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323233288] [2020-09-25 09:58:49,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:58:49,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 09:58:49,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942816939] [2020-09-25 09:58:49,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 09:58:49,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:58:49,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 09:58:49,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:58:49,356 INFO L87 Difference]: Start difference. First operand 266 states and 337 transitions. Second operand 9 states. [2020-09-25 09:58:49,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:58:49,581 INFO L93 Difference]: Finished difference Result 533 states and 727 transitions. [2020-09-25 09:58:49,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:58:49,582 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 132 [2020-09-25 09:58:49,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:58:49,585 INFO L225 Difference]: With dead ends: 533 [2020-09-25 09:58:49,585 INFO L226 Difference]: Without dead ends: 334 [2020-09-25 09:58:49,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-09-25 09:58:49,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-09-25 09:58:49,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 276. [2020-09-25 09:58:49,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-09-25 09:58:49,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 350 transitions. [2020-09-25 09:58:49,630 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 350 transitions. Word has length 132 [2020-09-25 09:58:49,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:58:49,630 INFO L479 AbstractCegarLoop]: Abstraction has 276 states and 350 transitions. [2020-09-25 09:58:49,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 09:58:49,631 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 350 transitions. [2020-09-25 09:58:49,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 09:58:49,633 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:49,633 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:49,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 09:58:49,634 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:49,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:49,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1821087151, now seen corresponding path program 4 times [2020-09-25 09:58:49,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:49,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815980755] [2020-09-25 09:58:49,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:49,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:49,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:49,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:50,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:50,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 09:58:50,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:58:50,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1154 [2020-09-25 09:58:50,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:50,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:50,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:58:50,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 09:58:50,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 09:58:50,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:58:50,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:58:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:50,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:50,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:50,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:58:50,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:50,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:58:50,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:50,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:50,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:50,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:50,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:50,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:50,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 09:58:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:50,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:50,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:50,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:50,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:50,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:58:50,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:50,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:50,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:50,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:50,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:50,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:50,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 09:58:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:50,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:50,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:50,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 09:58:50,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:50,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 09:58:50,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:50,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:50,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:58:50,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 09:58:50,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 09:58:50,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:51,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 09:58:51,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:51,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:51,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:51,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:51,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:51,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:58:51,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:51,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:51,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:51,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:58:51,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:51,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:58:51,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 09:58:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:51,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:51,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:51,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:51,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:51,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:58:51,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:51,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:51,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:51,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:58:51,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:51,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:58:51,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 09:58:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:51,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:51,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:51,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 09:58:51,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:51,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:58:51,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:51,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:51,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:51,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:58:51,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:51,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:58:51,167 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 7 proven. 64 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 09:58:51,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815980755] [2020-09-25 09:58:51,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:58:51,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 09:58:51,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816858636] [2020-09-25 09:58:51,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 09:58:51,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:58:51,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 09:58:51,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:58:51,170 INFO L87 Difference]: Start difference. First operand 276 states and 350 transitions. Second operand 9 states. [2020-09-25 09:58:51,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:58:51,628 INFO L93 Difference]: Finished difference Result 529 states and 714 transitions. [2020-09-25 09:58:51,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 09:58:51,629 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 132 [2020-09-25 09:58:51,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:58:51,631 INFO L225 Difference]: With dead ends: 529 [2020-09-25 09:58:51,631 INFO L226 Difference]: Without dead ends: 323 [2020-09-25 09:58:51,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-09-25 09:58:51,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-09-25 09:58:51,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 276. [2020-09-25 09:58:51,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-09-25 09:58:51,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 349 transitions. [2020-09-25 09:58:51,662 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 349 transitions. Word has length 132 [2020-09-25 09:58:51,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:58:51,662 INFO L479 AbstractCegarLoop]: Abstraction has 276 states and 349 transitions. [2020-09-25 09:58:51,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 09:58:51,662 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 349 transitions. [2020-09-25 09:58:51,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 09:58:51,668 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:51,669 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:51,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 09:58:51,669 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:51,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:51,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1074765785, now seen corresponding path program 6 times [2020-09-25 09:58:51,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:51,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854508858] [2020-09-25 09:58:51,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:51,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:51,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:52,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:52,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 09:58:52,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:58:52,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1092 [2020-09-25 09:58:52,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:52,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:52,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 09:58:52,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 09:58:52,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 09:58:52,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:58:52,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:58:52,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:52,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:52,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:52,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:58:52,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:52,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:58:52,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:52,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:52,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:52,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:52,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:52,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:58:52,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 09:58:52,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:52,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:52,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:52,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:52,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:52,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:58:52,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:52,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:52,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:52,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:52,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:52,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:52,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 09:58:52,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:52,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:52,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:52,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 09:58:52,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:52,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-25 09:58:52,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:52,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:52,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 09:58:52,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 09:58:52,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 09:58:52,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:53,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-25 09:58:53,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:53,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:53,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:53,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:53,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:53,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:58:53,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:53,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:53,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:53,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:58:53,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:53,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:53,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-25 09:58:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:53,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:53,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:53,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:53,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:53,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:58:53,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:53,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:53,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:53,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:58:53,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:53,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:53,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-25 09:58:53,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:53,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:53,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:53,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 09:58:53,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:53,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:58:53,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:53,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:53,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:53,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:58:53,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:53,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:58:53,095 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 6 proven. 99 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 09:58:53,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854508858] [2020-09-25 09:58:53,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:58:53,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:58:53,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314254386] [2020-09-25 09:58:53,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:58:53,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:58:53,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:58:53,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:58:53,099 INFO L87 Difference]: Start difference. First operand 276 states and 349 transitions. Second operand 10 states. [2020-09-25 09:58:53,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:58:53,361 INFO L93 Difference]: Finished difference Result 558 states and 766 transitions. [2020-09-25 09:58:53,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 09:58:53,361 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 137 [2020-09-25 09:58:53,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:58:53,367 INFO L225 Difference]: With dead ends: 558 [2020-09-25 09:58:53,367 INFO L226 Difference]: Without dead ends: 354 [2020-09-25 09:58:53,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-09-25 09:58:53,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-09-25 09:58:53,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 286. [2020-09-25 09:58:53,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-09-25 09:58:53,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 362 transitions. [2020-09-25 09:58:53,399 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 362 transitions. Word has length 137 [2020-09-25 09:58:53,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:58:53,399 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 362 transitions. [2020-09-25 09:58:53,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:58:53,399 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 362 transitions. [2020-09-25 09:58:53,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 09:58:53,402 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:53,402 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:53,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 09:58:53,403 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:53,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:53,403 INFO L82 PathProgramCache]: Analyzing trace with hash -321656743, now seen corresponding path program 5 times [2020-09-25 09:58:53,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:53,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224002878] [2020-09-25 09:58:53,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:53,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:53,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:53,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:54,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:54,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 09:58:54,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:58:54,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1195 [2020-09-25 09:58:54,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:54,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:54,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 09:58:54,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 09:58:54,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 09:58:54,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:54,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:58:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:54,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:54,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:54,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:58:54,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:54,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:58:54,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:54,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:54,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:54,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:54,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:54,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:54,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 09:58:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:54,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:54,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:54,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:54,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:54,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:58:54,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:54,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:54,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:54,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:54,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:54,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:58:54,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 09:58:54,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:54,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:54,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:54,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 09:58:54,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:54,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-25 09:58:54,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:54,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:54,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 09:58:54,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 09:58:54,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 09:58:54,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:54,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-25 09:58:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:54,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:55,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:55,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:55,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:55,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:58:55,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:55,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:55,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:55,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:58:55,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:55,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:55,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-25 09:58:55,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:55,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:55,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:55,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:55,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:55,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:58:55,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:55,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:55,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:55,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:58:55,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:55,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:55,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-25 09:58:55,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:55,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:55,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:55,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 09:58:55,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:55,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:58:55,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:55,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:55,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:55,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:58:55,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:55,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:58:55,057 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 7 proven. 89 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 09:58:55,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224002878] [2020-09-25 09:58:55,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:58:55,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:58:55,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422678842] [2020-09-25 09:58:55,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:58:55,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:58:55,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:58:55,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:58:55,062 INFO L87 Difference]: Start difference. First operand 286 states and 362 transitions. Second operand 10 states. [2020-09-25 09:58:55,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:58:55,568 INFO L93 Difference]: Finished difference Result 549 states and 743 transitions. [2020-09-25 09:58:55,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 09:58:55,569 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 137 [2020-09-25 09:58:55,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:58:55,571 INFO L225 Difference]: With dead ends: 549 [2020-09-25 09:58:55,572 INFO L226 Difference]: Without dead ends: 338 [2020-09-25 09:58:55,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-09-25 09:58:55,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-09-25 09:58:55,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 286. [2020-09-25 09:58:55,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-09-25 09:58:55,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 361 transitions. [2020-09-25 09:58:55,600 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 361 transitions. Word has length 137 [2020-09-25 09:58:55,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:58:55,600 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 361 transitions. [2020-09-25 09:58:55,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:58:55,600 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 361 transitions. [2020-09-25 09:58:55,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 09:58:55,603 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:55,603 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:55,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 09:58:55,604 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:55,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:55,604 INFO L82 PathProgramCache]: Analyzing trace with hash 2050385695, now seen corresponding path program 7 times [2020-09-25 09:58:55,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:55,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024892639] [2020-09-25 09:58:55,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:55,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:55,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:55,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:56,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:56,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 09:58:56,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:58:56,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1260 [2020-09-25 09:58:56,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:56,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:56,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 09:58:56,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 09:58:56,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 09:58:56,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:56,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:58:56,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:56,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:56,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:56,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:58:56,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:56,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:58:56,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:56,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:56,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:56,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:56,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:56,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:56,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 09:58:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:56,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:56,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:56,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:56,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:56,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:58:56,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:56,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:56,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:56,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:56,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:56,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:56,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 09:58:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:56,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:57,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:57,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 09:58:57,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:57,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-25 09:58:57,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:57,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:57,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 09:58:57,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 09:58:57,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 09:58:57,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:57,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 09:58:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:57,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:57,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:57,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:57,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:57,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:58:57,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:57,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:57,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:57,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:58:57,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:57,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:57,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-09-25 09:58:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:57,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:57,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:57,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:57,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:57,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 09:58:57,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:57,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:57,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:57,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:58:57,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:57,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:57,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 09:58:57,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:57,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:57,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:57,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 09:58:57,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:57,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:58:57,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:57,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:57,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:57,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:58:57,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:57,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:58:57,257 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 6 proven. 131 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 09:58:57,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024892639] [2020-09-25 09:58:57,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:58:57,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 09:58:57,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361043979] [2020-09-25 09:58:57,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 09:58:57,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:58:57,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 09:58:57,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:58:57,260 INFO L87 Difference]: Start difference. First operand 286 states and 361 transitions. Second operand 11 states. [2020-09-25 09:58:57,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:58:57,590 INFO L93 Difference]: Finished difference Result 583 states and 805 transitions. [2020-09-25 09:58:57,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 09:58:57,591 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 142 [2020-09-25 09:58:57,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:58:57,599 INFO L225 Difference]: With dead ends: 583 [2020-09-25 09:58:57,599 INFO L226 Difference]: Without dead ends: 374 [2020-09-25 09:58:57,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-09-25 09:58:57,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2020-09-25 09:58:57,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 296. [2020-09-25 09:58:57,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-09-25 09:58:57,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 374 transitions. [2020-09-25 09:58:57,643 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 374 transitions. Word has length 142 [2020-09-25 09:58:57,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:58:57,644 INFO L479 AbstractCegarLoop]: Abstraction has 296 states and 374 transitions. [2020-09-25 09:58:57,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 09:58:57,644 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 374 transitions. [2020-09-25 09:58:57,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 09:58:57,648 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:57,649 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:57,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 09:58:57,649 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:57,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:57,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1491472559, now seen corresponding path program 6 times [2020-09-25 09:58:57,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:57,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82618227] [2020-09-25 09:58:57,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:57,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:57,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:59,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:59,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 09:58:59,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:58:59,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1416 [2020-09-25 09:58:59,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:59,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:59,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 09:58:59,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 09:58:59,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 09:58:59,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:59,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:58:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:59,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:59,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:59,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:58:59,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:59,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:58:59,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:59,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:59,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:59,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:59,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:59,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:59,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 09:58:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:59,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:59,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:59,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:59,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:59,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:58:59,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:59,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:59,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:59,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:58:59,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:59,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:58:59,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 09:58:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:59,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:59,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:59,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 09:58:59,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:59,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-09-25 09:58:59,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:59,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:59,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 09:58:59,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 09:58:59,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 09:58:59,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:59,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 09:58:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:59,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:59,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:59,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:59,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:59,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:58:59,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:59,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:59,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:59,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:58:59,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:59,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:58:59,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-09-25 09:58:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:59,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:59,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:59,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:58:59,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:59,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:58:59,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:59,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:59,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:59,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:58:59,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:59,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:58:59,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 09:58:59,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:59,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:58:59,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:58:59,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 09:58:59,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:58:59,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:58:59,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:58:59,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:58:59,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:58:59,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:58:59,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:58:59,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:58:59,551 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 119 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 09:58:59,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82618227] [2020-09-25 09:58:59,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:58:59,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 09:58:59,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805996489] [2020-09-25 09:58:59,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 09:58:59,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:58:59,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 09:58:59,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:58:59,559 INFO L87 Difference]: Start difference. First operand 296 states and 374 transitions. Second operand 11 states. [2020-09-25 09:58:59,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:58:59,771 INFO L93 Difference]: Finished difference Result 549 states and 745 transitions. [2020-09-25 09:58:59,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:58:59,772 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 142 [2020-09-25 09:58:59,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:58:59,775 INFO L225 Difference]: With dead ends: 549 [2020-09-25 09:58:59,775 INFO L226 Difference]: Without dead ends: 342 [2020-09-25 09:58:59,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:58:59,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-09-25 09:58:59,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 296. [2020-09-25 09:58:59,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-09-25 09:58:59,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 374 transitions. [2020-09-25 09:58:59,804 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 374 transitions. Word has length 142 [2020-09-25 09:58:59,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:58:59,805 INFO L479 AbstractCegarLoop]: Abstraction has 296 states and 374 transitions. [2020-09-25 09:58:59,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 09:58:59,805 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 374 transitions. [2020-09-25 09:58:59,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 09:58:59,808 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:58:59,809 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:58:59,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 09:58:59,809 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:58:59,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:58:59,809 INFO L82 PathProgramCache]: Analyzing trace with hash 536214311, now seen corresponding path program 8 times [2020-09-25 09:58:59,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:58:59,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208096737] [2020-09-25 09:58:59,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:58:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:58:59,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:00,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:01,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:01,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-25 09:59:01,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:59:01,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1428 [2020-09-25 09:59:01,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:01,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:01,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 09:59:01,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 09:59:01,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 09:59:01,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:01,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:01,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:01,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:01,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:01,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:01,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:59:01,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:01,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:01,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:01,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:01,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:01,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:59:01,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 09:59:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:01,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:01,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:01,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:59:01,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:01,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:59:01,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:01,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:01,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:01,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:01,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:01,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:01,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 09:59:01,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:01,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:01,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:01,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 09:59:01,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:01,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-09-25 09:59:01,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:01,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:01,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 09:59:01,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 09:59:01,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 09:59:01,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:01,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-25 09:59:01,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:01,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:01,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:01,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:59:01,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:01,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:59:01,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:01,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:01,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:01,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:59:01,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:01,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:01,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-09-25 09:59:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:01,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:01,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:01,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:59:01,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:01,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:59:01,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:01,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:01,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:01,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:59:01,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:01,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:01,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-09-25 09:59:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:01,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:01,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:01,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 09:59:01,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:01,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:59:01,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:01,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:01,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:01,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:59:01,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:01,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:01,719 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 6 proven. 168 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 09:59:01,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208096737] [2020-09-25 09:59:01,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:59:01,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 09:59:01,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317975544] [2020-09-25 09:59:01,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 09:59:01,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:01,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 09:59:01,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:59:01,724 INFO L87 Difference]: Start difference. First operand 296 states and 374 transitions. Second operand 12 states. [2020-09-25 09:59:02,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:02,145 INFO L93 Difference]: Finished difference Result 614 states and 851 transitions. [2020-09-25 09:59:02,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 09:59:02,146 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 147 [2020-09-25 09:59:02,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:02,151 INFO L225 Difference]: With dead ends: 614 [2020-09-25 09:59:02,151 INFO L226 Difference]: Without dead ends: 400 [2020-09-25 09:59:02,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-09-25 09:59:02,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-09-25 09:59:02,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 306. [2020-09-25 09:59:02,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-09-25 09:59:02,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 387 transitions. [2020-09-25 09:59:02,195 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 387 transitions. Word has length 147 [2020-09-25 09:59:02,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:02,196 INFO L479 AbstractCegarLoop]: Abstraction has 306 states and 387 transitions. [2020-09-25 09:59:02,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 09:59:02,197 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 387 transitions. [2020-09-25 09:59:02,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 09:59:02,200 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:02,200 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:59:02,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-25 09:59:02,201 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:02,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:02,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1289323353, now seen corresponding path program 7 times [2020-09-25 09:59:02,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:02,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620276516] [2020-09-25 09:59:02,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:02,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:02,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:02,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:03,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:03,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-25 09:59:03,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:59:03,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1461 [2020-09-25 09:59:03,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:03,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:03,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 09:59:03,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 09:59:03,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 09:59:03,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:03,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:03,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:03,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:03,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:03,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:03,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:59:03,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:03,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:03,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:03,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:03,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:03,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:03,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 09:59:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:03,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:03,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:03,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:59:03,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:03,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:59:03,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:03,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:03,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:03,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:03,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:03,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:03,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 09:59:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:03,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:04,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:04,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 09:59:04,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:04,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-09-25 09:59:04,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:04,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:04,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 09:59:04,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 09:59:04,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 09:59:04,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:04,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-25 09:59:04,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:04,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:04,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:04,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:59:04,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:04,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:59:04,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:04,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:04,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:04,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:59:04,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:04,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:04,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-09-25 09:59:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:04,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:04,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:04,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:59:04,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:04,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:59:04,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:04,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:04,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:04,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:59:04,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:04,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:04,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-09-25 09:59:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:04,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:04,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:04,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 09:59:04,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:04,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:59:04,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:04,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:04,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:04,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:59:04,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:04,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:04,323 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 7 proven. 154 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 09:59:04,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620276516] [2020-09-25 09:59:04,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:59:04,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 09:59:04,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165153340] [2020-09-25 09:59:04,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 09:59:04,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:04,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 09:59:04,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:59:04,326 INFO L87 Difference]: Start difference. First operand 306 states and 387 transitions. Second operand 12 states. [2020-09-25 09:59:05,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:05,074 INFO L93 Difference]: Finished difference Result 590 states and 803 transitions. [2020-09-25 09:59:05,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 09:59:05,075 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 147 [2020-09-25 09:59:05,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:05,079 INFO L225 Difference]: With dead ends: 590 [2020-09-25 09:59:05,079 INFO L226 Difference]: Without dead ends: 368 [2020-09-25 09:59:05,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2020-09-25 09:59:05,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2020-09-25 09:59:05,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 306. [2020-09-25 09:59:05,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-09-25 09:59:05,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 385 transitions. [2020-09-25 09:59:05,110 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 385 transitions. Word has length 147 [2020-09-25 09:59:05,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:05,111 INFO L479 AbstractCegarLoop]: Abstraction has 306 states and 385 transitions. [2020-09-25 09:59:05,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 09:59:05,111 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 385 transitions. [2020-09-25 09:59:05,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 09:59:05,114 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:05,115 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:59:05,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-25 09:59:05,115 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:05,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:05,115 INFO L82 PathProgramCache]: Analyzing trace with hash -730223585, now seen corresponding path program 9 times [2020-09-25 09:59:05,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:05,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397760692] [2020-09-25 09:59:05,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:05,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:05,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:06,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:06,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 09:59:06,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:59:06,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1367 [2020-09-25 09:59:06,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:06,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:06,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 09:59:06,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 09:59:06,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 09:59:06,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:06,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:06,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:06,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:06,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:06,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:06,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:59:06,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:06,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:06,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:06,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:06,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:06,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:06,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 09:59:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:06,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:06,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:06,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:59:06,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:06,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:59:06,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:06,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:06,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:06,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:06,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:06,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:06,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 09:59:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:06,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:06,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:06,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 09:59:06,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:06,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-09-25 09:59:06,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:06,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:06,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 09:59:06,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 09:59:06,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 09:59:06,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:06,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-25 09:59:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:06,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:06,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:06,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:59:06,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:06,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:59:06,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:06,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:06,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:06,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:59:06,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:06,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:06,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-09-25 09:59:06,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:06,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:06,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:06,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:59:06,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:06,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:59:06,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:06,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:06,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:06,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:59:06,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:06,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:06,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-25 09:59:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:06,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:06,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:06,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 09:59:06,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:06,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:59:06,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:06,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:06,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:06,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:59:06,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:06,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:06,983 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 6 proven. 210 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 09:59:06,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [397760692] [2020-09-25 09:59:06,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:59:06,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 09:59:06,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435746749] [2020-09-25 09:59:06,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 09:59:06,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:06,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 09:59:06,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=79, Unknown=0, NotChecked=0, Total=156 [2020-09-25 09:59:06,985 INFO L87 Difference]: Start difference. First operand 306 states and 385 transitions. Second operand 13 states. [2020-09-25 09:59:07,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:07,180 INFO L93 Difference]: Finished difference Result 613 states and 835 transitions. [2020-09-25 09:59:07,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:59:07,181 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-09-25 09:59:07,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:07,186 INFO L225 Difference]: With dead ends: 613 [2020-09-25 09:59:07,186 INFO L226 Difference]: Without dead ends: 394 [2020-09-25 09:59:07,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=92, Unknown=0, NotChecked=0, Total=182 [2020-09-25 09:59:07,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-09-25 09:59:07,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 316. [2020-09-25 09:59:07,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-09-25 09:59:07,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 398 transitions. [2020-09-25 09:59:07,243 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 398 transitions. Word has length 152 [2020-09-25 09:59:07,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:07,243 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 398 transitions. [2020-09-25 09:59:07,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 09:59:07,243 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 398 transitions. [2020-09-25 09:59:07,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 09:59:07,246 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:07,246 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:59:07,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-25 09:59:07,247 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:07,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:07,247 INFO L82 PathProgramCache]: Analyzing trace with hash 22885457, now seen corresponding path program 8 times [2020-09-25 09:59:07,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:07,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643590687] [2020-09-25 09:59:07,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:07,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:07,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:08,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:08,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 09:59:08,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:59:08,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1599 [2020-09-25 09:59:08,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:08,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:08,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 09:59:08,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 09:59:08,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 09:59:08,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:08,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:08,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:08,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:08,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:08,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:08,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:59:08,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:08,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:08,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:08,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:08,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:08,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:08,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 09:59:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:08,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:08,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:08,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:59:08,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:08,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:59:08,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:08,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:08,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:08,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:08,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:08,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:08,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 09:59:08,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:08,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:09,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:09,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 09:59:09,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:09,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-09-25 09:59:09,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:09,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:09,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 09:59:09,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 09:59:09,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 09:59:09,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:09,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-25 09:59:09,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:09,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:09,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:09,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:59:09,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:09,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:59:09,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:09,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:09,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:09,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:59:09,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:09,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:09,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-09-25 09:59:09,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:09,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:09,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:09,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:59:09,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:09,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:59:09,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:09,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:09,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:09,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:59:09,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:09,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:09,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-25 09:59:09,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:09,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:09,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:09,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 09:59:09,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:09,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:59:09,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:09,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:09,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:09,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:59:09,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:09,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:09,466 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 7 proven. 194 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 09:59:09,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643590687] [2020-09-25 09:59:09,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:59:09,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 09:59:09,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568599318] [2020-09-25 09:59:09,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 09:59:09,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:09,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 09:59:09,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-09-25 09:59:09,468 INFO L87 Difference]: Start difference. First operand 316 states and 398 transitions. Second operand 13 states. [2020-09-25 09:59:09,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:09,865 INFO L93 Difference]: Finished difference Result 587 states and 801 transitions. [2020-09-25 09:59:09,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:59:09,866 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-09-25 09:59:09,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:09,869 INFO L225 Difference]: With dead ends: 587 [2020-09-25 09:59:09,870 INFO L226 Difference]: Without dead ends: 370 [2020-09-25 09:59:09,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-09-25 09:59:09,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-09-25 09:59:09,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 316. [2020-09-25 09:59:09,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-09-25 09:59:09,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 398 transitions. [2020-09-25 09:59:09,906 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 398 transitions. Word has length 152 [2020-09-25 09:59:09,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:09,907 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 398 transitions. [2020-09-25 09:59:09,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 09:59:09,907 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 398 transitions. [2020-09-25 09:59:09,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 09:59:09,909 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:09,910 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:59:09,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-25 09:59:09,910 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:09,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:09,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1979045415, now seen corresponding path program 10 times [2020-09-25 09:59:09,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:09,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331588053] [2020-09-25 09:59:09,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:09,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking...