/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/fibo_15-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:29:45,454 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:29:45,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:29:45,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:29:45,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:29:45,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:29:45,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:29:45,517 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:29:45,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:29:45,523 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:29:45,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:29:45,525 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:29:45,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:29:45,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:29:45,531 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:29:45,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:29:45,535 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:29:45,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:29:45,537 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:29:45,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:29:45,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:29:45,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:29:45,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:29:45,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:29:45,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:29:45,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:29:45,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:29:45,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:29:45,560 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:29:45,561 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:29:45,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:29:45,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:29:45,563 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:29:45,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:29:45,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:29:45,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:29:45,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:29:45,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:29:45,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:29:45,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:29:45,569 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:29:45,571 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 14:29:45,615 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:29:45,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:29:45,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:29:45,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:29:45,618 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:29:45,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:29:45,619 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:29:45,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:29:45,619 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:29:45,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:29:45,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:29:45,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:29:45,621 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:29:45,621 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:29:45,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:29:45,622 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:29:45,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:29:45,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:29:45,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:29:45,623 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:29:45,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:29:45,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:29:45,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:29:45,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:29:45,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:29:45,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:29:45,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:29:45,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:29:45,625 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:29:45,625 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 14:29:46,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:29:46,076 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:29:46,081 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:29:46,082 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:29:46,083 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:29:46,084 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_15-1.c [2020-09-25 14:29:46,160 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93c636d6b/722404cec1cb4210a99faf2f02eb9e83/FLAGbf0dc8ef5 [2020-09-25 14:29:46,660 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:29:46,661 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_15-1.c [2020-09-25 14:29:46,669 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93c636d6b/722404cec1cb4210a99faf2f02eb9e83/FLAGbf0dc8ef5 [2020-09-25 14:29:46,996 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93c636d6b/722404cec1cb4210a99faf2f02eb9e83 [2020-09-25 14:29:47,009 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:29:47,015 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:29:47,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:29:47,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:29:47,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:29:47,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:29:46" (1/1) ... [2020-09-25 14:29:47,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cc40f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:47, skipping insertion in model container [2020-09-25 14:29:47,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:29:46" (1/1) ... [2020-09-25 14:29:47,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:29:47,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:29:47,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:29:47,264 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:29:47,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:29:47,300 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:29:47,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:47 WrapperNode [2020-09-25 14:29:47,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:29:47,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:29:47,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:29:47,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:29:47,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:47" (1/1) ... [2020-09-25 14:29:47,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:47" (1/1) ... [2020-09-25 14:29:47,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:47" (1/1) ... [2020-09-25 14:29:47,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:47" (1/1) ... [2020-09-25 14:29:47,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:47" (1/1) ... [2020-09-25 14:29:47,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:47" (1/1) ... [2020-09-25 14:29:47,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:47" (1/1) ... [2020-09-25 14:29:47,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:29:47,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:29:47,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:29:47,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:29:47,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:47" (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 14:29:47,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:29:47,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:29:47,480 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 14:29:47,480 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:29:47,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:29:47,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:29:47,480 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 14:29:47,481 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:29:47,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:29:47,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:29:47,687 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:29:47,687 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 14:29:47,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:29:47 BoogieIcfgContainer [2020-09-25 14:29:47,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:29:47,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:29:47,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:29:47,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:29:47,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:29:46" (1/3) ... [2020-09-25 14:29:47,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2226e1f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:29:47, skipping insertion in model container [2020-09-25 14:29:47,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:47" (2/3) ... [2020-09-25 14:29:47,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2226e1f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:29:47, skipping insertion in model container [2020-09-25 14:29:47,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:29:47" (3/3) ... [2020-09-25 14:29:47,702 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_15-1.c [2020-09-25 14:29:47,711 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:29:47,721 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:29:47,743 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:29:47,775 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:29:47,775 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:29:47,775 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:29:47,775 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:29:47,776 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:29:47,776 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:29:47,776 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:29:47,776 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:29:47,799 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 14:29:47,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 14:29:47,808 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:47,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:47,810 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:47,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:47,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 14:29:47,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:47,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159804191] [2020-09-25 14:29:47,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:47,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:47,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:47,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:29:47,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:47,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 14:29:47,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:47,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:47,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:29:47,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:29:47,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:29:47,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:29:48,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:48,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:48,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:48,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:48,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:48,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:48,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:29:48,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:48,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:48,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:48,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:48,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:48,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:48,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:29:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:48,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:48,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:48,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:29:48,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:48,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 14:29:48,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:48,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:48,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:29:48,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:29:48,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:29:48,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 14:29:48,270 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 14:29:48,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159804191] [2020-09-25 14:29:48,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:29:48,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:29:48,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865443215] [2020-09-25 14:29:48,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:29:48,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:48,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:29:48,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:29:48,297 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 14:29:48,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:48,431 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 14:29:48,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:29:48,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 14:29:48,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:48,445 INFO L225 Difference]: With dead ends: 44 [2020-09-25 14:29:48,446 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 14:29:48,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:29:48,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 14:29:48,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 14:29:48,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 14:29:48,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 14:29:48,501 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 14:29:48,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:48,502 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 14:29:48,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:29:48,502 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 14:29:48,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 14:29:48,505 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:48,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:48,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:29:48,506 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:48,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:48,506 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 14:29:48,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:48,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406739472] [2020-09-25 14:29:48,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:48,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:48,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:48,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:48,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 14:29:48,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:48,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 14:29:48,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:48,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:48,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:29:48,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:29:48,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:29:48,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:48,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:48,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:48,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:48,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:48,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:48,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:48,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:29:48,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:48,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:48,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:48,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:48,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:48,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:48,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:29:48,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:48,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:48,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:48,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:29:48,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:48,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 14:29:48,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:48,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:48,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:29:48,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:29:48,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:29:48,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:48,691 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 14:29:48,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406739472] [2020-09-25 14:29:48,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:29:48,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:29:48,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918788353] [2020-09-25 14:29:48,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:29:48,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:48,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:29:48,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:29:48,695 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 14:29:48,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:48,758 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 14:29:48,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:29:48,759 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 14:29:48,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:48,760 INFO L225 Difference]: With dead ends: 36 [2020-09-25 14:29:48,760 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 14:29:48,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 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 14:29:48,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 14:29:48,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 14:29:48,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 14:29:48,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 14:29:48,770 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 14:29:48,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:48,771 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 14:29:48,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:29:48,771 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 14:29:48,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 14:29:48,773 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:48,773 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:48,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:29:48,773 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:48,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:48,774 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 14:29:48,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:48,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157534869] [2020-09-25 14:29:48,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:48,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:48,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:48,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:49,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:49,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 14:29:49,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:29:49,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 667 [2020-09-25 14:29:49,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:49,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:49,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:29:49,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:29:49,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 14:29:49,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:29:49,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:49,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:49,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:49,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:49,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:49,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:49,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:29:49,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:49,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:49,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:49,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:49,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:49,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:29:49,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:29:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:49,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:49,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:49,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:49,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:49,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:29:49,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:29:49,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-09-25 14:29:49,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:49,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:49,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:29:49,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:29:49,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:29:49,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:49,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:49,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:49,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:49,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:29:49,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:49,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:29:49,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:49,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:49,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:29:49,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:49,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:29:49,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:49,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:29:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:49,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:49,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:49,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:29:49,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:49,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:29:49,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:49,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:49,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:29:49,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:49,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:29:49,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:49,919 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 14:29:49,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157534869] [2020-09-25 14:29:49,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:29:49,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:29:49,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642036119] [2020-09-25 14:29:49,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:29:49,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:49,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:29:49,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:29:49,922 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-25 14:29:50,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:50,004 INFO L93 Difference]: Finished difference Result 62 states and 79 transitions. [2020-09-25 14:29:50,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:29:50,005 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 14:29:50,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:50,007 INFO L225 Difference]: With dead ends: 62 [2020-09-25 14:29:50,007 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 14:29:50,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:29:50,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 14:29:50,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-09-25 14:29:50,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 14:29:50,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-09-25 14:29:50,018 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 33 [2020-09-25 14:29:50,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:50,018 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-09-25 14:29:50,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:29:50,018 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-09-25 14:29:50,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 14:29:50,022 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:50,022 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:50,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:29:50,024 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:50,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:50,025 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 1 times [2020-09-25 14:29:50,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:50,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323092349] [2020-09-25 14:29:50,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:50,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:50,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:50,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:50,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 14:29:50,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:50,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-09-25 14:29:50,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:50,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:50,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:29:50,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:29:50,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 14:29:50,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:50,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:50,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:50,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:50,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:50,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:50,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:50,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:29:50,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:50,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:50,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:50,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:50,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:50,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:50,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:29:50,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:50,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:50,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:50,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:50,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:29:50,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:50,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-09-25 14:29:50,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:50,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:50,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:29:50,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:29:50,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 14:29:50,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:50,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:50,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:50,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:50,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:50,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:29:50,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:50,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:29:50,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:50,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:50,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:29:50,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:50,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:29:50,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:50,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:29:50,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:50,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:50,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:50,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:29:50,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:50,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:29:50,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:50,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:50,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:29:50,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:50,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:29:50,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:50,803 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 14:29:50,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323092349] [2020-09-25 14:29:50,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:29:50,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:29:50,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896236000] [2020-09-25 14:29:50,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:29:50,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:50,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:29:50,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:29:50,806 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 7 states. [2020-09-25 14:29:50,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:50,899 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-09-25 14:29:50,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:29:50,900 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-25 14:29:50,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:50,902 INFO L225 Difference]: With dead ends: 50 [2020-09-25 14:29:50,902 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 14:29:50,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:29:50,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 14:29:50,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2020-09-25 14:29:50,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 14:29:50,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-09-25 14:29:50,911 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 34 [2020-09-25 14:29:50,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:50,912 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-09-25 14:29:50,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:29:50,912 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-09-25 14:29:50,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 14:29:50,914 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:50,914 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:50,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:29:50,914 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:50,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:50,915 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 14:29:50,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:50,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185146632] [2020-09-25 14:29:50,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:50,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:50,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:50,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:50,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:51,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:51,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:51,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 14:29:51,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:29:51,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 465 [2020-09-25 14:29:51,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:51,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:51,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:29:51,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:29:51,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:29:51,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:51,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:51,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:51,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:51,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:51,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:51,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:51,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:51,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:51,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:51,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:51,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:51,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:51,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:29:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:51,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:51,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:51,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:51,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:29:51,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:51,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 14:29:51,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:51,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:51,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:29:51,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 14:29:51,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:29:51,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:51,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:51,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:51,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:51,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:29:51,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:51,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:29:51,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:51,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:51,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:29:51,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:51,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:29:51,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:51,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:29:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:51,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:51,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:51,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:51,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:29:51,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:51,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 14:29:51,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:51,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:51,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:29:51,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:29:51,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:29:51,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:51,615 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 14:29:51,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185146632] [2020-09-25 14:29:51,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:29:51,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:29:51,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312555345] [2020-09-25 14:29:51,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:29:51,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:51,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:29:51,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:29:51,619 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 7 states. [2020-09-25 14:29:51,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:51,823 INFO L93 Difference]: Finished difference Result 83 states and 107 transitions. [2020-09-25 14:29:51,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:29:51,824 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 14:29:51,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:51,826 INFO L225 Difference]: With dead ends: 83 [2020-09-25 14:29:51,826 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 14:29:51,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:29:51,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 14:29:51,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 40. [2020-09-25 14:29:51,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 14:29:51,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2020-09-25 14:29:51,851 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 35 [2020-09-25 14:29:51,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:51,852 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2020-09-25 14:29:51,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:29:51,852 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2020-09-25 14:29:51,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 14:29:51,855 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:51,855 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:51,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:29:51,855 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:51,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:51,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 2 times [2020-09-25 14:29:51,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:51,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126341580] [2020-09-25 14:29:51,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:51,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:51,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:51,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:51,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:52,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:52,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:52,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:56,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:56,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 14:29:56,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:29:56,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 14:29:56,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:56,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:56,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:29:56,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:29:56,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 14:29:56,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:56,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:56,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:56,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:56,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:56,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:56,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:56,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:56,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:56,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:56,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:56,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:56,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:56,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:29:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:56,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:56,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:56,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:57,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:57,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:57,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:57,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:00,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:00,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 14:30:00,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:30:00,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3827 [2020-09-25 14:30:00,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:00,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:00,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:00,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:30:00,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 14:30:00,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:00,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:00,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:00,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:00,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:00,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:30:00,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:30:00,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 14:30:00,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:00,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:00,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:30:00,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:00,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:30:00,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:00,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:00,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:00,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:00,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:00,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:00,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:00,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:30:00,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:00,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:00,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:00,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:00,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:00,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:00,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:30:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:00,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:00,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:00,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:00,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:00,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:30:00,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:00,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:00,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:00,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:00,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:00,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:00,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 14:30:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:00,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:00,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:00,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:30:00,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:00,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:30:00,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:00,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:00,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:30:00,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:00,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:30:00,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:00,918 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 14:30:00,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126341580] [2020-09-25 14:30:00,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:30:00,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:30:00,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206359382] [2020-09-25 14:30:00,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:30:00,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:30:00,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:30:00,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:30:00,921 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 7 states. [2020-09-25 14:30:01,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:30:01,036 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2020-09-25 14:30:01,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:30:01,037 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 14:30:01,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:30:01,038 INFO L225 Difference]: With dead ends: 52 [2020-09-25 14:30:01,038 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 14:30:01,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:30:01,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 14:30:01,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-25 14:30:01,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 14:30:01,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2020-09-25 14:30:01,048 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 51 [2020-09-25 14:30:01,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:30:01,048 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2020-09-25 14:30:01,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:30:01,048 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2020-09-25 14:30:01,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 14:30:01,051 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:01,051 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:30:01,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:30:01,052 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:01,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:01,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1086233509, now seen corresponding path program 3 times [2020-09-25 14:30:01,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:01,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649332582] [2020-09-25 14:30:01,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:01,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:01,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:01,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:01,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:01,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:01,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:03,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:03,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:03,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:06,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:06,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 14:30:06,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:30:06,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 14:30:06,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:06,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:06,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:30:06,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:30:06,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 14:30:06,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:06,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:30:06,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:06,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:06,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:06,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:30:06,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:06,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:30:06,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:06,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:06,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:06,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:06,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:06,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:06,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:30:06,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:06,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:06,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:06,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:06,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:06,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:06,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:06,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:06,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:08,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:08,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:09,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:09,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:09,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:11,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:11,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 14:30:11,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 14:30:11,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:30:11,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:11,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:11,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:30:11,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 14:30:11,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 14:30:11,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:11,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:11,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:11,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:11,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:11,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:11,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:30:11,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:30:11,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-25 14:30:11,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:11,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:11,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:11,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:11,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 14:30:11,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:11,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:11,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:11,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:11,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:11,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:11,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:11,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:30:11,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:11,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:11,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:30:11,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:11,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:30:11,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:11,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:30:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:11,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:11,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:11,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:11,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:11,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:30:11,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:11,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:11,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:30:11,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:11,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:30:11,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:11,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 14:30:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:11,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:11,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:11,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:11,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:11,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:11,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:11,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:11,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:12,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:12,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 14:30:12,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:30:12,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1499 [2020-09-25 14:30:12,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:12,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:12,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:30:12,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:30:12,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 14:30:12,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:12,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:12,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:12,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:12,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:12,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:30:12,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:30:12,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 14:30:12,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:12,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:12,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:30:12,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:12,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:30:12,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:12,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:12,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:12,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:12,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:12,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:12,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:12,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:30:12,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:12,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:12,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:12,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:12,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:12,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:12,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:30:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:12,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:12,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:12,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:12,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:12,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:30:12,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:12,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:12,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:12,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:12,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:12,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:12,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 14:30:13,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:13,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:13,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:13,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:30:13,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:13,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:30:13,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:13,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:13,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:30:13,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:13,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:30:13,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:13,027 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 54 proven. 69 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-09-25 14:30:13,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649332582] [2020-09-25 14:30:13,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:30:13,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 14:30:13,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945848766] [2020-09-25 14:30:13,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:30:13,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:30:13,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:30:13,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:30:13,032 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 10 states. [2020-09-25 14:30:13,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:30:13,314 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2020-09-25 14:30:13,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:30:13,315 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-09-25 14:30:13,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:30:13,316 INFO L225 Difference]: With dead ends: 77 [2020-09-25 14:30:13,316 INFO L226 Difference]: Without dead ends: 43 [2020-09-25 14:30:13,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-09-25 14:30:13,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-25 14:30:13,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-25 14:30:13,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-25 14:30:13,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-09-25 14:30:13,324 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 85 [2020-09-25 14:30:13,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:30:13,324 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-09-25 14:30:13,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:30:13,325 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-09-25 14:30:13,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 14:30:13,326 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:13,326 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:30:13,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 14:30:13,327 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:13,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:13,327 INFO L82 PathProgramCache]: Analyzing trace with hash 501566307, now seen corresponding path program 4 times [2020-09-25 14:30:13,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:13,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609887791] [2020-09-25 14:30:13,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:13,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:13,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:13,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:13,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:13,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:13,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:13,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:13,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:13,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:16,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:16,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:18,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:18,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 14:30:18,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 14:30:18,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 14:30:18,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:18,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:18,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:30:18,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:30:18,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 14:30:18,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:18,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:30:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:18,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:18,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:18,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:30:18,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:18,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:30:18,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:18,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:18,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:18,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:18,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:18,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:18,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:30:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:18,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:18,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:18,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:18,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:18,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:18,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:18,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:18,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:18,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:21,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:23,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:23,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 14:30:23,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 14:30:23,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:30:23,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:23,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:23,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:30:23,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 14:30:23,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 14:30:23,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:23,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:23,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:23,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:23,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:23,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:30:23,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:30:23,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-09-25 14:30:23,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:23,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:23,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:23,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:23,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 14:30:23,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:23,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:23,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:23,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:23,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:30:23,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:23,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:30:23,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:23,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:23,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:30:23,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:23,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:30:23,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:23,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:30:23,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:23,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:23,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:23,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:23,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:23,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:30:23,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:23,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:23,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:30:23,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:23,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:30:23,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:23,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:30:23,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:23,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:23,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:23,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:23,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:23,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:23,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:24,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:24,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 14:30:24,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:30:24,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1240 [2020-09-25 14:30:24,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:24,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:24,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:30:24,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:30:24,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 14:30:24,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:24,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:24,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:24,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:24,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:30:24,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:24,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:30:24,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:24,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:24,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:30:24,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:24,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 14:30:24,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:24,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:24,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:24,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:24,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:24,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:30:24,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:24,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:30:24,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:24,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:24,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:24,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:24,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:24,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:24,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:30:24,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:24,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:24,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:24,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:24,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:24,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:30:24,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:24,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:24,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:24,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:24,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:24,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:24,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:30:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:24,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:24,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:24,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:30:24,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:24,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:30:24,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:24,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:24,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:30:24,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:24,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:30:24,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:24,998 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 57 proven. 70 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-09-25 14:30:24,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609887791] [2020-09-25 14:30:24,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:30:24,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:30:24,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353531402] [2020-09-25 14:30:25,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:30:25,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:30:25,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:30:25,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:30:25,001 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 8 states. [2020-09-25 14:30:25,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:30:25,231 INFO L93 Difference]: Finished difference Result 98 states and 128 transitions. [2020-09-25 14:30:25,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:30:25,232 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 87 [2020-09-25 14:30:25,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:30:25,233 INFO L225 Difference]: With dead ends: 98 [2020-09-25 14:30:25,234 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 14:30:25,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:30:25,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 14:30:25,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-09-25 14:30:25,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 14:30:25,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-09-25 14:30:25,243 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 87 [2020-09-25 14:30:25,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:30:25,243 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-09-25 14:30:25,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:30:25,244 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-09-25 14:30:25,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-25 14:30:25,245 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:25,246 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:30:25,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 14:30:25,246 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:25,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:25,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1108116753, now seen corresponding path program 5 times [2020-09-25 14:30:25,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:25,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026640615] [2020-09-25 14:30:25,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:25,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:25,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:25,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:25,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:25,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:25,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:25,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:25,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:25,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:25,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:26,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:26,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:26,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:26,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:26,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:29,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:30,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:30,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 14:30:30,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 14:30:30,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 14:30:30,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:30,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:30,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 14:30:30,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:30:30,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 14:30:30,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:30,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:30:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:30,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:30,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:30,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:30:30,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:30,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:30:30,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:30,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:30,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:30,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:30,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:30,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:30,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:30:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:30,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:30,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:30,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:30,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:30,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:30,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:31,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:31,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:31,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:31,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:31,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:32,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:32,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:32,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:35,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:35,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 14:30:35,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 14:30:35,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 14:30:35,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:35,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:35,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 14:30:35,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 14:30:35,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 14:30:35,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:35,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:35,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:35,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:35,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:35,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:35,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:35,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:35,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:35,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:36,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:36,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 14:30:36,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:30:36,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1678 [2020-09-25 14:30:36,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:36,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:36,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:30:36,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 14:30:36,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 14:30:36,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:37,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:37,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:37,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:37,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:37,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:37,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:37,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:30:37,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:30:37,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-09-25 14:30:37,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:37,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:37,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:30:37,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:37,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 14:30:37,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:37,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:37,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:37,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:37,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:30:37,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:37,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:30:37,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:37,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:37,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:30:37,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:37,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:30:37,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:37,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:30:37,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:37,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:37,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:37,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:37,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:37,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:30:37,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:37,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:37,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:30:37,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:37,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:30:37,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:37,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:30:37,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:37,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:37,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:37,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:37,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:37,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:30:37,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:37,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:37,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:30:37,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:30:37,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:30:37,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:37,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 14:30:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:37,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:37,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:37,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:37,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:37,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:37,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:37,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:38,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:38,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:38,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:38,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:38,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:38,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:39,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking...