/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_i15_o15-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:31:50,395 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:31:50,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:31:50,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:31:50,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:31:50,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:31:50,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:31:50,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:31:50,467 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:31:50,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:31:50,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:31:50,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:31:50,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:31:50,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:31:50,479 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:31:50,481 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:31:50,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:31:50,484 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:31:50,485 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:31:50,495 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:31:50,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:31:50,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:31:50,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:31:50,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:31:50,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:31:50,504 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:31:50,504 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:31:50,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:31:50,508 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:31:50,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:31:50,509 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:31:50,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:31:50,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:31:50,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:31:50,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:31:50,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:31:50,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:31:50,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:31:50,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:31:50,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:31:50,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:31:50,518 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:31:50,564 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:31:50,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:31:50,567 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:31:50,567 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:31:50,567 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:31:50,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:31:50,568 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:31:50,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:31:50,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:31:50,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:31:50,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:31:50,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:31:50,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:31:50,571 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:31:50,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:31:50,571 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:31:50,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:31:50,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:31:50,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:31:50,572 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:31:50,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:31:50,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:31:50,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:31:50,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:31:50,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:31:50,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:31:50,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:31:50,573 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:31:50,574 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:31:50,574 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:31:51,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:31:51,080 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:31:51,085 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:31:51,088 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:31:51,088 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:31:51,090 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i15_o15-2.c [2020-09-25 14:31:51,185 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5ab31207/9f886fb313fb4a638e21b8a2c33852d5/FLAGdc62d0a34 [2020-09-25 14:31:51,732 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:31:51,733 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_i15_o15-2.c [2020-09-25 14:31:51,741 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5ab31207/9f886fb313fb4a638e21b8a2c33852d5/FLAGdc62d0a34 [2020-09-25 14:31:52,091 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5ab31207/9f886fb313fb4a638e21b8a2c33852d5 [2020-09-25 14:31:52,104 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:31:52,109 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:31:52,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:31:52,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:31:52,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:31:52,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:31:52" (1/1) ... [2020-09-25 14:31:52,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20e2873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:31:52, skipping insertion in model container [2020-09-25 14:31:52,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:31:52" (1/1) ... [2020-09-25 14:31:52,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:31:52,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:31:52,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:31:52,378 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:31:52,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:31:52,411 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:31:52,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:31:52 WrapperNode [2020-09-25 14:31:52,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:31:52,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:31:52,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:31:52,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:31:52,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:31:52" (1/1) ... [2020-09-25 14:31:52,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:31:52" (1/1) ... [2020-09-25 14:31:52,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:31:52" (1/1) ... [2020-09-25 14:31:52,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:31:52" (1/1) ... [2020-09-25 14:31:52,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:31:52" (1/1) ... [2020-09-25 14:31:52,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:31:52" (1/1) ... [2020-09-25 14:31:52,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:31:52" (1/1) ... [2020-09-25 14:31:52,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:31:52,443 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:31:52,443 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:31:52,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:31:52,445 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:31:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:31:52,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:31:52,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:31:52,623 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-25 14:31:52,623 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:31:52,623 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:31:52,623 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:31:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-25 14:31:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:31:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:31:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:31:52,818 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:31:52,819 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 14:31:52,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:31:52 BoogieIcfgContainer [2020-09-25 14:31:52,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:31:52,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:31:52,826 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:31:52,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:31:52,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:31:52" (1/3) ... [2020-09-25 14:31:52,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e08a68a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:31:52, skipping insertion in model container [2020-09-25 14:31:52,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:31:52" (2/3) ... [2020-09-25 14:31:52,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e08a68a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:31:52, skipping insertion in model container [2020-09-25 14:31:52,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:31:52" (3/3) ... [2020-09-25 14:31:52,834 INFO L109 eAbstractionObserver]: Analyzing ICFG id_i15_o15-2.c [2020-09-25 14:31:52,846 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:31:52,859 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:31:52,886 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:31:52,919 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:31:52,920 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:31:52,920 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:31:52,920 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:31:52,920 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:31:52,921 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:31:52,921 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:31:52,921 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:31:52,946 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-09-25 14:31:52,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 14:31:52,955 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:31:52,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:31:52,957 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:31:52,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:31:52,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1037734449, now seen corresponding path program 1 times [2020-09-25 14:31:52,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:31:52,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677407881] [2020-09-25 14:31:52,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:31:53,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:53,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:53,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:53,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:53,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:31:53,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:31:53,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-09-25 14:31:53,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:53,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:53,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:31:53,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 14:31:53,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:31:53,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:31:53,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:31:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:53,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:53,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:53,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:31:53,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:53,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:31:53,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:53,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:53,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:53,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:53,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:53,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:53,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:31:53,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:53,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:53,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:53,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:53,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:53,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:31:53,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:53,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:53,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:31:53,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:53,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:31:53,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:53,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:31:53,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677407881] [2020-09-25 14:31:53,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:31:53,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:31:53,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504647301] [2020-09-25 14:31:53,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:31:53,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:31:53,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:31:53,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:31:53,514 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-09-25 14:31:53,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:31:53,615 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-25 14:31:53,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:31:53,618 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 14:31:53,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:31:53,632 INFO L225 Difference]: With dead ends: 37 [2020-09-25 14:31:53,633 INFO L226 Difference]: Without dead ends: 23 [2020-09-25 14:31:53,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:31:53,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-25 14:31:53,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-25 14:31:53,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-25 14:31:53,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-09-25 14:31:53,693 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 16 [2020-09-25 14:31:53,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:31:53,694 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-09-25 14:31:53,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:31:53,695 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-09-25 14:31:53,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 14:31:53,697 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:31:53,697 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:31:53,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:31:53,698 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:31:53,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:31:53,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1478812441, now seen corresponding path program 1 times [2020-09-25 14:31:53,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:31:53,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836612632] [2020-09-25 14:31:53,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:31:53,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:53,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:53,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:54,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:54,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 14:31:54,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:31:54,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-09-25 14:31:54,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:54,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:54,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:31:54,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 14:31:54,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 14:31:54,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:54,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:31:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:54,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:54,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:54,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:31:54,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:54,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:31:54,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:54,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:54,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:54,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:54,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:54,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 14:31:54,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:31:54,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:54,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:54,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:54,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 14:31:54,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:54,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 14:31:54,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:54,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:54,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:31:54,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:54,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:31:54,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 14:31:54,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:31:54,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:54,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:54,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:54,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:54,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:54,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:31:54,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:54,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:54,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:31:54,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:54,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:31:54,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:54,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 14:31:54,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836612632] [2020-09-25 14:31:54,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:31:54,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:31:54,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574936876] [2020-09-25 14:31:54,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:31:54,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:31:54,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:31:54,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:31:54,323 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2020-09-25 14:31:54,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:31:54,392 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-09-25 14:31:54,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 14:31:54,393 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-25 14:31:54,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:31:54,394 INFO L225 Difference]: With dead ends: 34 [2020-09-25 14:31:54,394 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 14:31:54,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:31:54,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 14:31:54,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 14:31:54,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 14:31:54,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-09-25 14:31:54,404 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 24 [2020-09-25 14:31:54,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:31:54,405 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-09-25 14:31:54,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:31:54,405 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-09-25 14:31:54,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 14:31:54,406 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:31:54,407 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:31:54,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:31:54,407 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:31:54,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:31:54,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1463730447, now seen corresponding path program 2 times [2020-09-25 14:31:54,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:31:54,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267122039] [2020-09-25 14:31:54,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:31:54,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:54,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:54,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:55,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:55,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 14:31:55,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:31:55,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 621 [2020-09-25 14:31:55,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:55,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:55,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:31:55,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 14:31:55,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 14:31:55,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:55,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:31:55,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:55,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:55,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:55,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:31:55,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:55,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:31:55,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:55,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:55,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:55,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:55,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:55,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:55,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:31:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:55,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:55,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:55,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 14:31:55,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:55,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 14:31:55,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:55,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:55,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:31:55,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:55,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 14:31:55,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:55,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:31:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:55,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:55,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:55,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 14:31:55,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:55,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 14:31:55,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:55,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:55,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:31:55,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:55,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:31:55,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:55,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:31:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:55,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:55,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:55,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:55,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:55,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:31:55,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:55,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:55,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:31:55,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:55,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:31:55,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:31:55,394 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 14:31:55,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267122039] [2020-09-25 14:31:55,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:31:55,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:31:55,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432386161] [2020-09-25 14:31:55,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:31:55,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:31:55,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:31:55,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:31:55,400 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 9 states. [2020-09-25 14:31:55,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:31:55,507 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-25 14:31:55,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:31:55,508 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-09-25 14:31:55,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:31:55,509 INFO L225 Difference]: With dead ends: 39 [2020-09-25 14:31:55,510 INFO L226 Difference]: Without dead ends: 33 [2020-09-25 14:31:55,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:31:55,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-25 14:31:55,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-25 14:31:55,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-25 14:31:55,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-09-25 14:31:55,525 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 32 [2020-09-25 14:31:55,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:31:55,525 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-09-25 14:31:55,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:31:55,526 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-09-25 14:31:55,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 14:31:55,529 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:31:55,529 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:31:55,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:31:55,530 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:31:55,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:31:55,531 INFO L82 PathProgramCache]: Analyzing trace with hash 23346727, now seen corresponding path program 3 times [2020-09-25 14:31:55,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:31:55,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794396620] [2020-09-25 14:31:55,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:31:55,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:55,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:55,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:56,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:56,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 14:31:56,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:31:56,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 880 [2020-09-25 14:31:56,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:56,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:56,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:31:56,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 14:31:56,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 14:31:56,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:56,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:31:56,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:56,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:56,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:56,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:31:56,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:56,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:31:56,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:56,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:56,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:56,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:56,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:56,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:56,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:31:56,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:56,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:56,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:56,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 14:31:56,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:56,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-25 14:31:56,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:56,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:56,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:31:56,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:56,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 14:31:56,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:56,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:31:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:56,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:56,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:56,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 14:31:56,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:56,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 14:31:56,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:56,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:56,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:31:56,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:56,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 14:31:56,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:56,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:31:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:56,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:56,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:56,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 14:31:56,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:56,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 14:31:56,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:56,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:56,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:31:56,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:56,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:31:56,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:56,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:31:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:56,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:56,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:56,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:56,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:56,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:31:56,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:56,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:56,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:31:56,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:56,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:31:56,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:56,840 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 14:31:56,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794396620] [2020-09-25 14:31:56,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:31:56,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 14:31:56,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44568043] [2020-09-25 14:31:56,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 14:31:56,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:31:56,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 14:31:56,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:31:56,843 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 11 states. [2020-09-25 14:31:56,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:31:56,938 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2020-09-25 14:31:56,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 14:31:56,939 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-09-25 14:31:56,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:31:56,941 INFO L225 Difference]: With dead ends: 44 [2020-09-25 14:31:56,941 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 14:31:56,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-09-25 14:31:56,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 14:31:56,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-25 14:31:56,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 14:31:56,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-25 14:31:56,949 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 40 [2020-09-25 14:31:56,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:31:56,950 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-25 14:31:56,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 14:31:56,950 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-25 14:31:56,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 14:31:56,952 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:31:56,952 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:31:56,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:31:56,952 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:31:56,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:31:56,953 INFO L82 PathProgramCache]: Analyzing trace with hash -649675855, now seen corresponding path program 4 times [2020-09-25 14:31:56,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:31:56,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982170211] [2020-09-25 14:31:56,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:31:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:56,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:57,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:58,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:58,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 14:31:58,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:31:58,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1444 [2020-09-25 14:31:58,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:58,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:58,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 14:31:58,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-25 14:31:58,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 14:31:58,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:58,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:31:58,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:58,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:58,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:58,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:31:58,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:58,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:31:58,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:58,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:58,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:58,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:58,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:58,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:58,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:31:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:58,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:58,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:58,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 14:31:58,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:58,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-25 14:31:58,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:58,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:58,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:31:58,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:58,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 14:31:58,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:58,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:31:58,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:58,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:58,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:58,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 14:31:58,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:58,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 14:31:58,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:58,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:58,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:31:58,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:58,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 14:31:58,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:58,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:31:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:58,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:58,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:58,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 14:31:58,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:58,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 14:31:58,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:58,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:58,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:31:58,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:58,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 14:31:58,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:58,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:31:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:58,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:58,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:58,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 14:31:58,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:58,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 14:31:58,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:58,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:58,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:31:58,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:58,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:31:58,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:58,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:31:58,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:58,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:58,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:58,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:58,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:58,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:31:58,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:58,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:58,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:31:58,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:58,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:31:58,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:59,003 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 14:31:59,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982170211] [2020-09-25 14:31:59,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:31:59,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 14:31:59,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668595526] [2020-09-25 14:31:59,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 14:31:59,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:31:59,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 14:31:59,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:31:59,006 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 13 states. [2020-09-25 14:31:59,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:31:59,132 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-09-25 14:31:59,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 14:31:59,133 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-09-25 14:31:59,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:31:59,135 INFO L225 Difference]: With dead ends: 49 [2020-09-25 14:31:59,135 INFO L226 Difference]: Without dead ends: 43 [2020-09-25 14:31:59,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-09-25 14:31:59,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-25 14:31:59,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-25 14:31:59,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-25 14:31:59,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-09-25 14:31:59,143 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 48 [2020-09-25 14:31:59,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:31:59,144 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-09-25 14:31:59,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 14:31:59,144 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-09-25 14:31:59,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 14:31:59,146 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:31:59,146 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:31:59,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:31:59,146 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:31:59,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:31:59,147 INFO L82 PathProgramCache]: Analyzing trace with hash 899977063, now seen corresponding path program 5 times [2020-09-25 14:31:59,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:31:59,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775373873] [2020-09-25 14:31:59,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:31:59,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:59,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:59,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:01,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:01,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:32:01,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:32:01,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2140 [2020-09-25 14:32:01,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:01,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:01,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 14:32:01,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 14:32:01,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 14:32:01,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:01,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:32:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:01,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:01,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:01,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:32:01,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:01,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:32:01,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:01,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:01,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:32:01,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:01,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:32:01,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:01,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:32:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:01,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:01,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:01,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 14:32:01,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:01,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-09-25 14:32:01,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:01,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:01,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:32:01,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:01,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 14:32:01,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:01,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:01,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:01,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:01,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 14:32:01,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:01,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-25 14:32:01,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:01,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:01,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:32:01,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:01,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 14:32:01,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:01,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:01,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:01,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:01,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 14:32:01,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:01,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 14:32:01,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:01,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:01,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:32:01,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:01,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 14:32:01,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:01,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:01,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:02,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:02,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 14:32:02,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:02,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 14:32:02,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:02,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:02,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:32:02,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:02,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 14:32:02,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:02,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:02,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:02,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:02,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 14:32:02,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:02,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 14:32:02,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:02,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:02,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:32:02,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:02,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:32:02,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:02,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:02,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:02,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:02,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:32:02,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:02,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:32:02,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:02,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:02,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:32:02,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:02,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:32:02,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:02,196 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 14:32:02,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775373873] [2020-09-25 14:32:02,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:32:02,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 14:32:02,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700836476] [2020-09-25 14:32:02,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 14:32:02,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:32:02,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 14:32:02,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-09-25 14:32:02,201 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 15 states. [2020-09-25 14:32:02,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:32:02,397 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2020-09-25 14:32:02,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 14:32:02,398 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-25 14:32:02,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:32:02,401 INFO L225 Difference]: With dead ends: 54 [2020-09-25 14:32:02,401 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 14:32:02,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2020-09-25 14:32:02,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 14:32:02,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-25 14:32:02,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 14:32:02,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-09-25 14:32:02,414 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 56 [2020-09-25 14:32:02,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:32:02,414 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-09-25 14:32:02,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 14:32:02,414 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-09-25 14:32:02,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 14:32:02,417 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:32:02,418 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:32:02,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:32:02,420 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:32:02,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:32:02,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1000802417, now seen corresponding path program 6 times [2020-09-25 14:32:02,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:32:02,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747597339] [2020-09-25 14:32:02,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:32:02,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:02,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:02,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:05,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:05,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:32:05,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:32:05,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2702 [2020-09-25 14:32:05,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:05,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:05,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 14:32:05,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 14:32:05,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 14:32:05,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:05,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:32:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:05,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:05,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:05,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:32:05,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:05,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:32:05,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:05,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:05,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:32:05,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:05,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:32:05,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:05,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:32:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:05,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:05,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:05,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 14:32:05,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:05,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-09-25 14:32:05,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:05,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:05,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:32:05,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:05,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 14:32:05,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:05,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:05,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:05,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:05,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:05,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 14:32:05,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:05,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-09-25 14:32:05,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:05,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:05,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:32:05,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:05,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 14:32:05,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:05,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:05,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:05,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:05,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 14:32:05,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:05,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-25 14:32:05,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:05,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:05,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:32:05,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:05,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 14:32:05,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:05,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:05,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:05,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:06,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:06,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 14:32:06,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:06,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 14:32:06,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:06,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:06,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:32:06,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:06,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 14:32:06,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:06,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:06,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:06,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:06,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:06,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 14:32:06,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:06,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 14:32:06,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:06,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:06,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:32:06,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:06,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 14:32:06,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:06,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:06,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:06,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:06,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 14:32:06,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:06,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 14:32:06,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:06,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:06,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:32:06,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:06,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:32:06,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:06,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:06,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:06,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:06,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:32:06,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:06,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:32:06,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:06,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:06,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:32:06,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:06,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:32:06,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:06,292 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-25 14:32:06,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747597339] [2020-09-25 14:32:06,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:32:06,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 14:32:06,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627994838] [2020-09-25 14:32:06,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 14:32:06,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:32:06,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 14:32:06,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-09-25 14:32:06,296 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 17 states. [2020-09-25 14:32:06,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:32:06,468 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-25 14:32:06,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 14:32:06,469 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 64 [2020-09-25 14:32:06,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:32:06,470 INFO L225 Difference]: With dead ends: 59 [2020-09-25 14:32:06,470 INFO L226 Difference]: Without dead ends: 53 [2020-09-25 14:32:06,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2020-09-25 14:32:06,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-25 14:32:06,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-25 14:32:06,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 14:32:06,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-09-25 14:32:06,478 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 64 [2020-09-25 14:32:06,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:32:06,479 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-09-25 14:32:06,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 14:32:06,479 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-09-25 14:32:06,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 14:32:06,480 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:32:06,480 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:32:06,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 14:32:06,481 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:32:06,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:32:06,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1977618599, now seen corresponding path program 7 times [2020-09-25 14:32:06,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:32:06,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715628438] [2020-09-25 14:32:06,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:32:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:06,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:06,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:09,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:09,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 14:32:09,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:32:09,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3502 [2020-09-25 14:32:09,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:09,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:09,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 14:32:09,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:32:09,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 14:32:09,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:10,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:32:10,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:10,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:10,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:10,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:32:10,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:10,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:32:10,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:10,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:10,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:32:10,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:10,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:32:10,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:10,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:32:10,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:10,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:10,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:10,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 14:32:10,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:10,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-09-25 14:32:10,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:10,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:10,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 14:32:10,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:32:10,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 14:32:10,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:10,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:10,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:10,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:10,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 14:32:10,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:10,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-09-25 14:32:10,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:10,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:10,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 14:32:10,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:10,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 14:32:10,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:10,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:10,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:10,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:10,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:10,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 14:32:10,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:10,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-09-25 14:32:10,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:10,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:10,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:32:10,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:10,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 14:32:10,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:10,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:10,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:11,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:11,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 14:32:11,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:11,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-25 14:32:11,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:11,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:11,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:32:11,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:11,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 14:32:11,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:11,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:11,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:11,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:11,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:11,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 14:32:11,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:11,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-25 14:32:11,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:11,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:11,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:32:11,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:11,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 14:32:11,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:11,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:11,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:11,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:11,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 14:32:11,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:11,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 14:32:11,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:11,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:11,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:32:11,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:11,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:32:11,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:11,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:11,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:11,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:11,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:11,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 14:32:11,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:11,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 14:32:11,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:11,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:11,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:32:11,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:11,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 14:32:11,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:11,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:11,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:11,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:11,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:32:11,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:11,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:32:11,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:11,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:11,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:32:11,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:11,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:32:11,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:11,505 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 7 proven. 131 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-09-25 14:32:11,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715628438] [2020-09-25 14:32:11,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:32:11,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 14:32:11,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216961493] [2020-09-25 14:32:11,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 14:32:11,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:32:11,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 14:32:11,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:32:11,508 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 14 states. [2020-09-25 14:32:11,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:32:11,677 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2020-09-25 14:32:11,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:32:11,678 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 72 [2020-09-25 14:32:11,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:32:11,683 INFO L225 Difference]: With dead ends: 64 [2020-09-25 14:32:11,683 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 14:32:11,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=300, Unknown=0, NotChecked=0, Total=462 [2020-09-25 14:32:11,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 14:32:11,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-25 14:32:11,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 14:32:11,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-25 14:32:11,694 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 72 [2020-09-25 14:32:11,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:32:11,694 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-25 14:32:11,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 14:32:11,695 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-25 14:32:11,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 14:32:11,699 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:32:11,699 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:32:11,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 14:32:11,702 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:32:11,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:32:11,702 INFO L82 PathProgramCache]: Analyzing trace with hash 555623729, now seen corresponding path program 8 times [2020-09-25 14:32:11,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:32:11,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197300123] [2020-09-25 14:32:11,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:32:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:11,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:12,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:16,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:16,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-25 14:32:16,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:32:16,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4353 [2020-09-25 14:32:16,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:16,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:16,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 14:32:16,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 14:32:16,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 14:32:16,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:16,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:32:16,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:16,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:16,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:16,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:32:16,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:16,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:32:16,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:16,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:16,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:32:16,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:16,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:32:16,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:16,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:32:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:16,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:16,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:16,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 14:32:16,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:16,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-09-25 14:32:16,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:16,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:16,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 14:32:16,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:16,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 14:32:16,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:16,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:16,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:16,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:16,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:16,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 14:32:16,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:16,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-09-25 14:32:16,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:16,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:16,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 14:32:16,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:16,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 14:32:16,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:16,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:16,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:17,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:17,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 14:32:17,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:17,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-09-25 14:32:17,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:17,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:17,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:32:17,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:17,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 14:32:17,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:17,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:17,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:17,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:17,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:17,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 14:32:17,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:17,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-25 14:32:17,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:17,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:17,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:32:17,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:17,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 14:32:17,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:17,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:17,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:17,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:17,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:17,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 14:32:17,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:17,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 14:32:17,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:17,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:17,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:32:17,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:17,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 14:32:17,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:17,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:17,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:17,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:17,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:17,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 14:32:17,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:17,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 14:32:17,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:17,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:17,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:32:17,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:17,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 14:32:17,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:17,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:17,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:17,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:17,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 14:32:17,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:17,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 14:32:17,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:17,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:17,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:32:17,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:17,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 14:32:17,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:17,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:17,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:17,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:17,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 14:32:17,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:17,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 14:32:17,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:17,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:17,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:32:17,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:17,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:32:17,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:17,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:17,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:17,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:17,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:32:17,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:17,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:32:17,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:17,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:17,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:32:17,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:17,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:32:17,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:17,914 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-25 14:32:17,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197300123] [2020-09-25 14:32:17,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:32:17,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 14:32:17,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834924845] [2020-09-25 14:32:17,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 14:32:17,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:32:17,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 14:32:17,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-09-25 14:32:17,922 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 21 states. [2020-09-25 14:32:18,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:32:18,088 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2020-09-25 14:32:18,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 14:32:18,089 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 80 [2020-09-25 14:32:18,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:32:18,090 INFO L225 Difference]: With dead ends: 69 [2020-09-25 14:32:18,090 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 14:32:18,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2020-09-25 14:32:18,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 14:32:18,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-09-25 14:32:18,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-25 14:32:18,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-09-25 14:32:18,099 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 80 [2020-09-25 14:32:18,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:32:18,100 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-09-25 14:32:18,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 14:32:18,100 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-09-25 14:32:18,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-25 14:32:18,101 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:32:18,101 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:32:18,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 14:32:18,102 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:32:18,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:32:18,102 INFO L82 PathProgramCache]: Analyzing trace with hash 777699815, now seen corresponding path program 9 times [2020-09-25 14:32:18,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:32:18,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724106922] [2020-09-25 14:32:18,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:32:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:18,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:18,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:23,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:23,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 14:32:23,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:32:23,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 14:32:23,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:23,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:23,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 14:32:23,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:32:23,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 14:32:23,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:23,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:32:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:23,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:23,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:23,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:32:23,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:23,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:32:23,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:23,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:23,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:32:23,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:23,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:32:23,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:23,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:32:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:23,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:23,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:23,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 14:32:23,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:23,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 449 [2020-09-25 14:32:23,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:23,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:23,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 14:32:23,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:32:23,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 14:32:23,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:23,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:23,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:23,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:24,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:24,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 14:32:24,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:24,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-09-25 14:32:24,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:24,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:24,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 14:32:24,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:24,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-25 14:32:24,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:24,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:24,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:24,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:24,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:24,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 14:32:24,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:24,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-09-25 14:32:24,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:24,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:24,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 14:32:24,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:24,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 14:32:24,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:24,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:24,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:24,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:24,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 14:32:24,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:24,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-25 14:32:24,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:24,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:24,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 14:32:24,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:24,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 14:32:24,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:24,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:24,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:24,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:24,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:24,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 14:32:24,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:24,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-25 14:32:24,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:24,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:32:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 14:32:24,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:24,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:24,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:25,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:25,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 14:32:25,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:25,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 14:32:25,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:25,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:25,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:32:25,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:25,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 14:32:25,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:25,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:25,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:25,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:25,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:25,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 14:32:25,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:25,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 14:32:25,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:25,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:25,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:32:25,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:25,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 14:32:25,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:25,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:25,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:25,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:25,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 14:32:25,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:25,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 14:32:25,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:25,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:25,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:32:25,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:25,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:32:25,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:25,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:25,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:25,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:25,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:25,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 14:32:25,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:25,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 14:32:25,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:25,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:25,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:32:25,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:25,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 14:32:25,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:25,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:25,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:25,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:25,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:32:25,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:25,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:32:25,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:25,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:25,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:32:25,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:25,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:32:25,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:25,400 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 23 proven. 228 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-09-25 14:32:25,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724106922] [2020-09-25 14:32:25,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:32:25,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 14:32:25,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253663796] [2020-09-25 14:32:25,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 14:32:25,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:32:25,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 14:32:25,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2020-09-25 14:32:25,402 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 16 states. [2020-09-25 14:32:25,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:32:25,615 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2020-09-25 14:32:25,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:32:25,616 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 88 [2020-09-25 14:32:25,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:32:25,617 INFO L225 Difference]: With dead ends: 74 [2020-09-25 14:32:25,617 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 14:32:25,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=229, Invalid=421, Unknown=0, NotChecked=0, Total=650 [2020-09-25 14:32:25,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 14:32:25,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-25 14:32:25,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-25 14:32:25,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2020-09-25 14:32:25,625 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 88 [2020-09-25 14:32:25,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:32:25,625 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2020-09-25 14:32:25,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 14:32:25,626 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2020-09-25 14:32:25,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-25 14:32:25,626 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:32:25,627 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:32:25,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 14:32:25,627 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:32:25,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:32:25,627 INFO L82 PathProgramCache]: Analyzing trace with hash 2145915377, now seen corresponding path program 10 times [2020-09-25 14:32:25,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:32:25,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762390791] [2020-09-25 14:32:25,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:32:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:25,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:25,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:30,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:30,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 14:32:30,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:32:30,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 14:32:30,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:30,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:30,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 14:32:30,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-25 14:32:30,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 14:32:30,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:30,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:32:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:30,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:30,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:30,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:32:30,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:30,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:32:30,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:30,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:30,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:32:30,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:30,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:32:30,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:30,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:32:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:30,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:31,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:31,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 14:32:31,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:31,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 517 [2020-09-25 14:32:31,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:31,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:31,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 14:32:31,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:31,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 14:32:31,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:31,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:31,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:31,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:31,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:31,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 14:32:31,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:31,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-09-25 14:32:31,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:31,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:31,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 14:32:31,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:31,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 14:32:31,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:31,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:31,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:31,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:32,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:32,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 14:32:32,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:32,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-09-25 14:32:32,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:32,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:32,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 14:32:32,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:32,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 14:32:32,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:32,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:32,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:32,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:32,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 14:32:32,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:32,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-09-25 14:32:32,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:32,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:32,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 14:32:32,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:32,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 14:32:32,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:32,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:32,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:32,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:32,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:32,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 14:32:32,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:32,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-09-25 14:32:32,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:32,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:32,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:32:32,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:32,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 14:32:32,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:32,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:32,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:32,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:32,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 14:32:32,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:32,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-25 14:32:32,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:32,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:32,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:32:32,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:32,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 14:32:32,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:32,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:32,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:32,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:32,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 14:32:32,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:32,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 14:32:32,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:32,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:32,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:32:32,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:32,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 14:32:32,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:32,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:32,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:33,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:33,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:33,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 14:32:33,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:33,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 14:32:33,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:33,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:33,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:32:33,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:33,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 14:32:33,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:33,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:33,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:33,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:33,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 14:32:33,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:33,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 14:32:33,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:33,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:33,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:32:33,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:33,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 14:32:33,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:33,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:33,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:33,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:33,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 14:32:33,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:33,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 14:32:33,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:33,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:33,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:32:33,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:33,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:32:33,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:33,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:33,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:33,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:33,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:32:33,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:33,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:32:33,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:33,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:33,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:32:33,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:33,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:32:33,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:33,354 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-09-25 14:32:33,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762390791] [2020-09-25 14:32:33,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:32:33,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 14:32:33,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485345050] [2020-09-25 14:32:33,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 14:32:33,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:32:33,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 14:32:33,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-09-25 14:32:33,357 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 25 states. [2020-09-25 14:32:33,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:32:33,610 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-09-25 14:32:33,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-25 14:32:33,611 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 96 [2020-09-25 14:32:33,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:32:33,613 INFO L225 Difference]: With dead ends: 79 [2020-09-25 14:32:33,613 INFO L226 Difference]: Without dead ends: 73 [2020-09-25 14:32:33,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=326, Invalid=934, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 14:32:33,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-25 14:32:33,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-09-25 14:32:33,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-25 14:32:33,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2020-09-25 14:32:33,621 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 96 [2020-09-25 14:32:33,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:32:33,621 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2020-09-25 14:32:33,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-25 14:32:33,622 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2020-09-25 14:32:33,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-25 14:32:33,623 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:32:33,623 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:32:33,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 14:32:33,623 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:32:33,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:32:33,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1180214055, now seen corresponding path program 11 times [2020-09-25 14:32:33,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:32:33,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078240290] [2020-09-25 14:32:33,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:32:33,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:33,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:33,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:38,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:38,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 14:32:38,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:32:38,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:32:38,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:38,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:38,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 14:32:38,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-09-25 14:32:38,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 14:32:38,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:38,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:32:38,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:38,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:38,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:38,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:32:38,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:38,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:32:38,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:38,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:38,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:32:38,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:38,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:32:38,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:38,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:32:38,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:38,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:39,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:39,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 14:32:39,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:39,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 642 [2020-09-25 14:32:39,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:39,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:39,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 14:32:39,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:39,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 14:32:39,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:39,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:39,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:39,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:39,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:39,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 14:32:39,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:39,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 513 [2020-09-25 14:32:39,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:39,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:39,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 14:32:39,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:39,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 14:32:39,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:39,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:39,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:40,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:40,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 14:32:40,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:40,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 437 [2020-09-25 14:32:40,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:40,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:40,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 14:32:40,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:40,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 14:32:40,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:40,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:40,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:40,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:40,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 14:32:40,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:40,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-09-25 14:32:40,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:40,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:40,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 14:32:40,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:40,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 14:32:40,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:40,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:40,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:41,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:41,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 14:32:41,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:41,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-09-25 14:32:41,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:41,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:41,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 14:32:41,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:41,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 14:32:41,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:41,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:41,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:41,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:41,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:41,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 14:32:41,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:41,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-09-25 14:32:41,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:41,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:41,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:32:41,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:41,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 14:32:41,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:41,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:41,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:41,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:41,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:41,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 14:32:41,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:41,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-09-25 14:32:41,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:41,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:41,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:32:41,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:41,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 14:32:41,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:32:41,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:41,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:41,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:41,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:41,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 14:32:41,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:41,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 14:32:41,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:41,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:41,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:32:41,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:41,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 14:32:41,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:32:41,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:41,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:41,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:41,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:41,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 14:32:41,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:41,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 14:32:41,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:41,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:41,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:32:41,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:41,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 14:32:41,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:41,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:41,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:41,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:41,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 14:32:41,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:41,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 14:32:41,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:41,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:41,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:32:41,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:41,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 14:32:41,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:42,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:42,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:42,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:42,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:42,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 14:32:42,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:42,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 14:32:42,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:42,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:42,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:32:42,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:42,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:32:42,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:42,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:42,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:42,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:42,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:32:42,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:42,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:32:42,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:42,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:42,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:32:42,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:42,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:32:42,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:42,198 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-09-25 14:32:42,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078240290] [2020-09-25 14:32:42,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:32:42,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-25 14:32:42,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506018361] [2020-09-25 14:32:42,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-25 14:32:42,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:32:42,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-25 14:32:42,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2020-09-25 14:32:42,200 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 27 states. [2020-09-25 14:32:42,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:32:42,481 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2020-09-25 14:32:42,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-25 14:32:42,481 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 104 [2020-09-25 14:32:42,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:32:42,483 INFO L225 Difference]: With dead ends: 84 [2020-09-25 14:32:42,483 INFO L226 Difference]: Without dead ends: 78 [2020-09-25 14:32:42,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=385, Invalid=1097, Unknown=0, NotChecked=0, Total=1482 [2020-09-25 14:32:42,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-25 14:32:42,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-09-25 14:32:42,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 14:32:42,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2020-09-25 14:32:42,491 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 104 [2020-09-25 14:32:42,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:32:42,491 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2020-09-25 14:32:42,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-25 14:32:42,491 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2020-09-25 14:32:42,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 14:32:42,492 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:32:42,493 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:32:42,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 14:32:42,493 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:32:42,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:32:42,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1287598415, now seen corresponding path program 12 times [2020-09-25 14:32:42,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:32:42,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566900902] [2020-09-25 14:32:42,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:32:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:42,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:42,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:47,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:47,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 14:32:47,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:32:47,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 14:32:47,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:47,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:47,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 14:32:47,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:32:47,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 14:32:47,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:47,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:32:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:47,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:47,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:47,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:32:47,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:47,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:32:47,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:47,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:47,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:32:47,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:47,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:32:47,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:47,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:32:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:47,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:48,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:48,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 14:32:48,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:48,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 819 [2020-09-25 14:32:48,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:48,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:48,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 14:32:48,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:32:48,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 14:32:48,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:48,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:48,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:49,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:49,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 14:32:49,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:49,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 701 [2020-09-25 14:32:49,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:49,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:49,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 14:32:49,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:49,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 14:32:49,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:49,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:49,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:49,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:49,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:49,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 14:32:49,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:49,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 542 [2020-09-25 14:32:49,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:49,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:49,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 14:32:49,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:49,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 14:32:49,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:32:49,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:32:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat