/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=0.3 --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_2calls_20-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:15:10,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:15:10,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:15:10,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:15:10,582 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:15:10,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:15:10,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:15:10,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:15:10,604 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:15:10,608 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:15:10,609 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:15:10,610 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:15:10,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:15:10,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:15:10,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:15:10,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:15:10,620 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:15:10,621 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:15:10,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:15:10,633 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:15:10,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:15:10,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:15:10,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:15:10,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:15:10,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:15:10,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:15:10,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:15:10,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:15:10,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:15:10,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:15:10,648 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:15:10,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:15:10,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:15:10,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:15:10,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:15:10,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:15:10,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:15:10,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:15:10,654 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:15:10,655 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:15:10,656 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:15:10,657 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 12:15:10,709 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:15:10,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:15:10,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:15:10,712 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:15:10,713 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:15:10,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:15:10,713 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:15:10,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:15:10,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:15:10,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:15:10,715 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:15:10,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:15:10,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:15:10,716 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:15:10,716 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:15:10,717 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:15:10,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:15:10,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:15:10,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:15:10,717 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:15:10,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:15:10,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:15:10,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:15:10,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:15:10,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:15:10,719 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:15:10,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:15:10,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:15:10,719 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:15:10,719 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:15:11,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:15:11,186 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:15:11,190 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:15:11,192 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:15:11,193 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:15:11,194 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_20-1.c [2020-09-25 12:15:11,275 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2e5c5a5a/b11defb6f3664bb391c11aa406e7007a/FLAG433b68b0e [2020-09-25 12:15:11,792 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:15:11,793 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_20-1.c [2020-09-25 12:15:11,802 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2e5c5a5a/b11defb6f3664bb391c11aa406e7007a/FLAG433b68b0e [2020-09-25 12:15:12,160 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2e5c5a5a/b11defb6f3664bb391c11aa406e7007a [2020-09-25 12:15:12,175 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:15:12,182 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:15:12,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:15:12,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:15:12,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:15:12,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:15:12" (1/1) ... [2020-09-25 12:15:12,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dfcebea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:12, skipping insertion in model container [2020-09-25 12:15:12,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:15:12" (1/1) ... [2020-09-25 12:15:12,208 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:15:12,235 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:15:12,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:15:12,478 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:15:12,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:15:12,512 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:15:12,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:12 WrapperNode [2020-09-25 12:15:12,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:15:12,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:15:12,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:15:12,513 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:15:12,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:12" (1/1) ... [2020-09-25 12:15:12,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:12" (1/1) ... [2020-09-25 12:15:12,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:12" (1/1) ... [2020-09-25 12:15:12,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:12" (1/1) ... [2020-09-25 12:15:12,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:12" (1/1) ... [2020-09-25 12:15:12,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:12" (1/1) ... [2020-09-25 12:15:12,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:12" (1/1) ... [2020-09-25 12:15:12,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:15:12,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:15:12,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:15:12,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:15:12,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:12" (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 12:15:12,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:15:12,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:15:12,700 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 12:15:12,700 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 12:15:12,700 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:15:12,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:15:12,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:15:12,701 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 12:15:12,701 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 12:15:12,701 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:15:12,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:15:12,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:15:12,926 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:15:12,927 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 12:15:12,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:15:12 BoogieIcfgContainer [2020-09-25 12:15:12,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:15:12,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:15:12,934 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:15:12,937 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:15:12,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:15:12" (1/3) ... [2020-09-25 12:15:12,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@481fbc72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:15:12, skipping insertion in model container [2020-09-25 12:15:12,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:12" (2/3) ... [2020-09-25 12:15:12,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@481fbc72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:15:12, skipping insertion in model container [2020-09-25 12:15:12,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:15:12" (3/3) ... [2020-09-25 12:15:12,942 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_20-1.c [2020-09-25 12:15:12,954 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:15:12,964 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:15:12,990 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:15:13,030 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:15:13,031 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:15:13,031 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:15:13,031 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:15:13,032 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:15:13,032 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:15:13,032 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:15:13,032 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:15:13,058 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 12:15:13,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 12:15:13,068 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:13,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:15:13,070 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:13,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:13,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 12:15:13,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:13,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583142016] [2020-09-25 12:15:13,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:13,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:13,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:13,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:13,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:15:13,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:15:13,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-09-25 12:15:13,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:13,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:13,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:15:13,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 12:15:13,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:13,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 12:15:13,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:13,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:13,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:13,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:13,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:13,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:15:13,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:13,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:13,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:13,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:13,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:13,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:13,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:13,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:13,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:13,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:13,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:13,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:15:13,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:13,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:13,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:15:13,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:13,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:15:13,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:13,590 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 12:15:13,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583142016] [2020-09-25 12:15:13,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:15:13,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:15:13,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975046015] [2020-09-25 12:15:13,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:15:13,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:13,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:15:13,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:15:13,622 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 12:15:13,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:13,723 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 12:15:13,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:15:13,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 12:15:13,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:13,740 INFO L225 Difference]: With dead ends: 58 [2020-09-25 12:15:13,740 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 12:15:13,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:15:13,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 12:15:13,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 12:15:13,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 12:15:13,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 12:15:13,806 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 12:15:13,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:13,807 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 12:15:13,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:15:13,807 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 12:15:13,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 12:15:13,810 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:13,810 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 12:15:13,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:15:13,811 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:13,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:13,811 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 12:15:13,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:13,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044176645] [2020-09-25 12:15:13,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:13,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:13,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:14,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:14,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 12:15:14,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:15:14,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-09-25 12:15:14,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:14,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:14,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:15:14,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:14,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:14,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:14,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:14,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:14,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:14,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:14,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:14,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:14,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:15:14,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:14,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:14,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:14,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:14,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:14,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:15:14,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:14,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:14,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:14,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:14,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:14,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 12:15:14,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:14,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:14,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:15:14,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:14,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:15:14,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:14,149 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 12:15:14,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044176645] [2020-09-25 12:15:14,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:15:14,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:15:14,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330461946] [2020-09-25 12:15:14,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:15:14,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:14,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:15:14,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:15:14,153 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 12:15:14,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:14,222 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 12:15:14,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:15:14,223 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 12:15:14,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:14,225 INFO L225 Difference]: With dead ends: 50 [2020-09-25 12:15:14,225 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 12:15:14,227 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 12:15:14,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 12:15:14,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 12:15:14,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 12:15:14,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 12:15:14,238 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 12:15:14,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:14,239 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 12:15:14,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:15:14,239 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 12:15:14,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 12:15:14,241 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:14,241 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:15:14,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:15:14,242 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:14,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:14,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 12:15:14,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:14,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719911633] [2020-09-25 12:15:14,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:14,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:14,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:14,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:14,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:14,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:16,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:16,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 12:15:16,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:15:16,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1845 [2020-09-25 12:15:16,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:16,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:16,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:16,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:16,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 12:15:16,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:16,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:16,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:16,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:16,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:16,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:16,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:15:16,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:16,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:16,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:16,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:16,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:16,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:16,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:16,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:16,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:16,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:16,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:16,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:15:16,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:15:16,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-09-25 12:15:16,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:16,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:16,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:16,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:16,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:15:16,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:16,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:16,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:16,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:16,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:16,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:16,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:15:16,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:16,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:16,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:16,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:16,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:16,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:16,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:15:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:16,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:16,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:16,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:16,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:16,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:15:16,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:16,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:16,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:15:16,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:16,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:15:16,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:16,439 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:15:16,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719911633] [2020-09-25 12:15:16,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:15:16,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:15:16,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669365427] [2020-09-25 12:15:16,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:15:16,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:16,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:15:16,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:15:16,448 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 12:15:16,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:16,582 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 12:15:16,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:15:16,582 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 12:15:16,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:16,585 INFO L225 Difference]: With dead ends: 58 [2020-09-25 12:15:16,585 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 12:15:16,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:15:16,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 12:15:16,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 12:15:16,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 12:15:16,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 12:15:16,597 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 12:15:16,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:16,597 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 12:15:16,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:15:16,597 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 12:15:16,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 12:15:16,600 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:16,600 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:15:16,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:15:16,601 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:16,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:16,601 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 12:15:16,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:16,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970178472] [2020-09-25 12:15:16,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:16,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:16,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:16,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:16,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:16,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:18,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:18,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 12:15:18,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:15:18,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1665 [2020-09-25 12:15:18,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:18,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:18,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:18,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:18,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 12:15:18,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:18,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:18,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:18,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:18,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:18,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:18,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:18,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:15:18,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:18,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:18,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:18,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:18,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:18,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:18,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:18,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:18,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:18,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:18,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:18,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:18,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:18,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 12:15:18,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:15:18,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 441 [2020-09-25 12:15:18,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:18,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:18,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:18,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:18,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 12:15:18,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:18,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:18,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:18,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:18,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:18,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:18,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:18,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:15:18,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:18,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:18,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:15:18,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:18,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:15:18,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:18,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:15:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:18,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:18,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:18,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:18,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:18,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:15:18,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:18,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:18,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:18,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:18,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:15:18,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:18,855 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:15:18,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970178472] [2020-09-25 12:15:18,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:15:18,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:15:18,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754708003] [2020-09-25 12:15:18,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:15:18,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:18,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:15:18,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:15:18,858 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 12:15:18,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:18,983 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2020-09-25 12:15:18,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:15:18,984 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 12:15:18,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:18,986 INFO L225 Difference]: With dead ends: 72 [2020-09-25 12:15:18,986 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 12:15:18,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:15:18,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 12:15:18,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 52. [2020-09-25 12:15:18,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 12:15:18,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2020-09-25 12:15:18,999 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 35 [2020-09-25 12:15:18,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:18,999 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2020-09-25 12:15:18,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:15:18,999 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2020-09-25 12:15:19,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 12:15:19,002 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:19,002 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:15:19,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:15:19,002 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:19,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:19,003 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 12:15:19,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:19,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394898205] [2020-09-25 12:15:19,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:19,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:19,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:19,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:19,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:19,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:19,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:19,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:22,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:24,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:24,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 12:15:24,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:15:24,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:15:24,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:24,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:24,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:24,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:24,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 12:15:24,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:24,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:24,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:24,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:24,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:24,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:24,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:15:24,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:24,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:24,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:24,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:24,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:24,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:24,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:24,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:24,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:24,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:24,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:24,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:24,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:24,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:26,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:26,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 12:15:26,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:15:26,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2580 [2020-09-25 12:15:26,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:26,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:26,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:26,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:26,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 12:15:26,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:26,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:26,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:26,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:26,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:26,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:15:26,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:15:26,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 12:15:26,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:26,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:26,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:26,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:26,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:15:26,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:26,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:26,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:26,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:26,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:26,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:26,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:15:26,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:26,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:26,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:26,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:26,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:26,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:26,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:15:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:26,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:26,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:26,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:26,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:26,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:15:26,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:26,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:26,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:26,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:26,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:26,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:26,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 12:15:26,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:26,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:26,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:26,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:26,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:26,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:15:26,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:26,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:26,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:15:26,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:26,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:15:26,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:26,829 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 12:15:26,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394898205] [2020-09-25 12:15:26,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:15:26,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:15:26,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081726246] [2020-09-25 12:15:26,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:15:26,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:26,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:15:26,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:15:26,832 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 7 states. [2020-09-25 12:15:26,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:26,968 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2020-09-25 12:15:26,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:15:26,969 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 12:15:26,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:26,970 INFO L225 Difference]: With dead ends: 64 [2020-09-25 12:15:26,971 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 12:15:26,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:15:26,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 12:15:26,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2020-09-25 12:15:26,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 12:15:26,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 12:15:26,981 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 51 [2020-09-25 12:15:26,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:26,982 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 12:15:26,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:15:26,982 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 12:15:26,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 12:15:26,985 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:26,985 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:15:26,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:15:26,985 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:26,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:26,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 12:15:26,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:26,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136603313] [2020-09-25 12:15:26,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:27,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:27,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:27,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:27,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:27,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:27,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:27,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:27,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:27,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:28,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:31,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:31,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 12:15:31,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:15:31,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:15:31,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:31,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:31,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:15:31,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:31,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 12:15:31,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:32,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:32,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:32,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:32,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:32,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:32,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:15:32,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:32,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:32,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:32,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:32,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:32,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:32,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:32,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:32,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:32,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:32,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:32,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:32,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:32,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:32,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:32,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:35,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:36,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:36,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:36,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:37,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:37,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 12:15:37,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 12:15:37,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 12:15:37,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:37,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:37,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:15:37,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:37,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 12:15:37,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:15:37,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:37,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:37,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:37,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:37,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:37,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:37,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:15:37,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:15:37,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-25 12:15:37,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:37,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:37,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:15:37,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:37,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 12:15:37,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:37,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:37,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:37,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:37,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:37,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:37,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:15:37,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:37,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:37,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:15:37,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:37,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:15:37,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:37,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:15:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:37,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:37,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:37,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:37,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:37,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:15:37,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:37,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:37,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:37,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:37,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:37,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:37,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 12:15:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:37,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:37,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:37,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:37,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:15:37,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:15:37,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 12:15:37,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:37,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:37,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:37,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:37,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:15:37,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:37,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:37,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:37,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:37,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:37,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:37,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:15:37,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:37,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:37,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:37,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:37,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:37,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:37,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:15:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:37,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:37,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:37,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:37,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:37,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:15:37,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:37,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:37,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:37,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:37,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:37,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:37,436 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 7 proven. 28 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-25 12:15:37,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136603313] [2020-09-25 12:15:37,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:15:37,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:15:37,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803970202] [2020-09-25 12:15:37,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:15:37,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:37,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:15:37,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:15:37,439 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 9 states. [2020-09-25 12:15:37,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:37,622 INFO L93 Difference]: Finished difference Result 78 states and 103 transitions. [2020-09-25 12:15:37,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 12:15:37,623 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2020-09-25 12:15:37,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:37,625 INFO L225 Difference]: With dead ends: 78 [2020-09-25 12:15:37,625 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 12:15:37,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:15:37,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 12:15:37,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 62. [2020-09-25 12:15:37,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 12:15:37,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 80 transitions. [2020-09-25 12:15:37,637 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 80 transitions. Word has length 67 [2020-09-25 12:15:37,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:37,638 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 80 transitions. [2020-09-25 12:15:37,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:15:37,638 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 80 transitions. [2020-09-25 12:15:37,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 12:15:37,641 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:37,641 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:15:37,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:15:37,641 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:37,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:37,642 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 12:15:37,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:37,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66260032] [2020-09-25 12:15:37,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:37,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:37,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:37,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:37,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:37,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:37,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:38,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:38,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:39,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:40,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:41,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:41,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:42,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:42,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:42,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 12:15:42,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 12:15:42,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 12:15:42,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:42,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:42,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:15:42,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:42,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 12:15:42,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:42,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:42,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:42,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:42,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:42,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:42,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:42,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:15:42,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:42,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:42,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:42,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:42,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:42,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:42,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:42,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:42,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:42,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:42,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:42,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:43,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:43,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:43,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:43,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:43,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:47,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:47,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:47,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:47,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:47,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 12:15:47,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 12:15:47,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 12:15:47,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:47,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:47,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:15:47,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:47,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 12:15:47,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:47,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:47,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:47,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:47,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:47,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:47,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 12:15:47,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:15:47,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-09-25 12:15:47,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:47,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:47,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:15:47,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:47,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 12:15:47,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:15:47,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:47,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:47,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:47,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:47,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:47,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:15:47,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:47,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:47,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:47,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:47,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:15:47,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:47,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:15:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:47,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:47,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:47,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:47,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:47,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:15:47,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:47,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:47,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:15:47,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:47,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:15:47,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:48,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:15:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:48,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:48,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:48,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 12:15:48,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:48,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 12:15:48,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:48,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:48,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:48,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:48,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 12:15:48,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:48,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:48,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:48,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:48,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:48,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:48,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:15:48,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:48,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:48,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:48,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:48,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:48,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:48,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:15:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:48,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:48,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:48,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:48,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:48,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:15:48,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:48,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:48,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:48,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:48,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:48,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:48,059 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 12:15:48,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66260032] [2020-09-25 12:15:48,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:15:48,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:15:48,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595391741] [2020-09-25 12:15:48,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:15:48,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:48,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:15:48,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:15:48,064 INFO L87 Difference]: Start difference. First operand 62 states and 80 transitions. Second operand 9 states. [2020-09-25 12:15:48,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:48,270 INFO L93 Difference]: Finished difference Result 94 states and 133 transitions. [2020-09-25 12:15:48,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 12:15:48,270 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-25 12:15:48,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:48,272 INFO L225 Difference]: With dead ends: 94 [2020-09-25 12:15:48,275 INFO L226 Difference]: Without dead ends: 88 [2020-09-25 12:15:48,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:15:48,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-25 12:15:48,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 76. [2020-09-25 12:15:48,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 12:15:48,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 105 transitions. [2020-09-25 12:15:48,305 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 105 transitions. Word has length 69 [2020-09-25 12:15:48,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:48,305 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 105 transitions. [2020-09-25 12:15:48,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:15:48,306 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 105 transitions. [2020-09-25 12:15:48,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 12:15:48,309 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:48,309 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:15:48,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 12:15:48,309 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:48,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:48,311 INFO L82 PathProgramCache]: Analyzing trace with hash 261409208, now seen corresponding path program 2 times [2020-09-25 12:15:48,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:48,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1721302897] [2020-09-25 12:15:48,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:48,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:48,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:48,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:48,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:48,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:48,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:48,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:49,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:50,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:52,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:53,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:53,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 12:15:53,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:15:53,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:15:53,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:53,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:53,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:15:53,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:53,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 12:15:53,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:15:53,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:53,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:53,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:53,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:53,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:53,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:53,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:15:53,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:53,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:53,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:53,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:53,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:53,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:15:53,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:53,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:53,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:53,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:53,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:53,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:53,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:54,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:54,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:55,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:57,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:58,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:58,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 12:15:58,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:15:58,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 12:15:58,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:58,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:58,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:15:58,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:58,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 12:15:58,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:58,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:58,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:58,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:58,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:58,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:58,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:58,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:58,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 12:15:58,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:15:58,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-09-25 12:15:58,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:58,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:58,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:15:58,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:58,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 12:15:58,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:15:58,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:58,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:58,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:58,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:58,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:58,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:15:58,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 12:15:58,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:58,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:58,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:58,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:58,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:15:58,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:15:58,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:15:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:58,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:58,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:58,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:58,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:58,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:15:58,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:58,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:58,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:15:58,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:58,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:15:58,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:15:58,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 12:15:58,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:58,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:58,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:58,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 12:15:58,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:58,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 12:15:58,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:58,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:58,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:58,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:58,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 12:15:58,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:58,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:58,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:58,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:58,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:58,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:58,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:58,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:15:58,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:58,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:58,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:58,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:58,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:58,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:58,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:15:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:58,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:58,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:58,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:58,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:58,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:15:58,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:58,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:58,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:58,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:58,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:58,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:58,929 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 13 proven. 26 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 12:15:58,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1721302897] [2020-09-25 12:15:58,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:15:58,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:15:58,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717764391] [2020-09-25 12:15:58,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:15:58,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:58,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:15:58,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:15:58,932 INFO L87 Difference]: Start difference. First operand 76 states and 105 transitions. Second operand 9 states. [2020-09-25 12:15:59,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:59,143 INFO L93 Difference]: Finished difference Result 132 states and 212 transitions. [2020-09-25 12:15:59,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:15:59,145 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-09-25 12:15:59,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:59,148 INFO L225 Difference]: With dead ends: 132 [2020-09-25 12:15:59,148 INFO L226 Difference]: Without dead ends: 126 [2020-09-25 12:15:59,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:15:59,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-09-25 12:15:59,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 114. [2020-09-25 12:15:59,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-25 12:15:59,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 176 transitions. [2020-09-25 12:15:59,168 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 176 transitions. Word has length 70 [2020-09-25 12:15:59,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:59,168 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 176 transitions. [2020-09-25 12:15:59,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:15:59,169 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 176 transitions. [2020-09-25 12:15:59,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-09-25 12:15:59,171 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:59,172 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:15:59,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 12:15:59,172 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:59,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:59,172 INFO L82 PathProgramCache]: Analyzing trace with hash -652230468, now seen corresponding path program 1 times [2020-09-25 12:15:59,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:59,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308796165] [2020-09-25 12:15:59,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:59,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:59,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:59,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:59,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:59,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:59,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:59,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:59,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:59,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:04,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:04,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 12:16:04,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:16:04,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 12:16:04,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:04,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:04,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:16:04,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:16:04,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 12:16:04,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:04,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:16:04,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:04,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:04,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:04,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:16:04,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:04,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:16:04,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:04,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:04,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:04,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:04,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:04,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:04,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:16:04,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:04,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:04,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:04,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:04,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:04,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:05,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking...