/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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_i10_o10-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:08:57,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:08:57,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:08:57,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:08:57,603 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:08:57,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:08:57,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:08:57,608 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:08:57,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:08:57,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:08:57,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:08:57,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:08:57,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:08:57,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:08:57,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:08:57,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:08:57,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:08:57,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:08:57,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:08:57,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:08:57,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:08:57,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:08:57,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:08:57,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:08:57,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:08:57,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:08:57,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:08:57,633 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:08:57,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:08:57,635 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:08:57,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:08:57,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:08:57,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:08:57,643 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:08:57,644 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:08:57,644 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:08:57,645 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:08:57,645 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:08:57,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:08:57,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:08:57,647 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:08:57,648 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 11:08:57,674 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:08:57,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:08:57,676 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:08:57,676 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:08:57,677 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:08:57,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:08:57,677 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:08:57,677 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:08:57,677 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:08:57,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:08:57,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:08:57,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:08:57,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:08:57,678 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:08:57,679 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:08:57,679 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:08:57,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:08:57,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:08:57,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:08:57,680 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:08:57,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:08:57,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:08:57,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:08:57,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:08:57,681 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:08:57,681 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:08:57,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:08:57,681 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:08:57,681 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:08:57,682 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 11:08:58,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:08:58,192 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:08:58,197 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:08:58,199 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:08:58,201 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:08:58,202 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i10_o10-2.c [2020-09-25 11:08:58,298 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b791dd0d/b6f24e6f73514a6fb533bd444b66ca6b/FLAGd01b225a1 [2020-09-25 11:08:58,845 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:08:58,846 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_i10_o10-2.c [2020-09-25 11:08:58,854 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b791dd0d/b6f24e6f73514a6fb533bd444b66ca6b/FLAGd01b225a1 [2020-09-25 11:08:59,201 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b791dd0d/b6f24e6f73514a6fb533bd444b66ca6b [2020-09-25 11:08:59,218 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:08:59,228 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:08:59,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:08:59,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:08:59,235 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:08:59,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:08:59" (1/1) ... [2020-09-25 11:08:59,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60f79fd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:08:59, skipping insertion in model container [2020-09-25 11:08:59,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:08:59" (1/1) ... [2020-09-25 11:08:59,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:08:59,280 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:08:59,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:08:59,529 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:08:59,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:08:59,562 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:08:59,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:08:59 WrapperNode [2020-09-25 11:08:59,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:08:59,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:08:59,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:08:59,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:08:59,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:08:59" (1/1) ... [2020-09-25 11:08:59,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:08:59" (1/1) ... [2020-09-25 11:08:59,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:08:59" (1/1) ... [2020-09-25 11:08:59,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:08:59" (1/1) ... [2020-09-25 11:08:59,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:08:59" (1/1) ... [2020-09-25 11:08:59,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:08:59" (1/1) ... [2020-09-25 11:08:59,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:08:59" (1/1) ... [2020-09-25 11:08:59,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:08:59,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:08:59,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:08:59,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:08:59,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:08:59" (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 11:08:59,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:08:59,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:08:59,749 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-25 11:08:59,749 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:08:59,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:08:59,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:08:59,750 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-25 11:08:59,750 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:08:59,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:08:59,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:08:59,948 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:08:59,948 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 11:08:59,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:08:59 BoogieIcfgContainer [2020-09-25 11:08:59,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:08:59,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:08:59,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:08:59,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:08:59,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:08:59" (1/3) ... [2020-09-25 11:08:59,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47dc9716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:08:59, skipping insertion in model container [2020-09-25 11:08:59,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:08:59" (2/3) ... [2020-09-25 11:08:59,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47dc9716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:08:59, skipping insertion in model container [2020-09-25 11:08:59,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:08:59" (3/3) ... [2020-09-25 11:08:59,963 INFO L109 eAbstractionObserver]: Analyzing ICFG id_i10_o10-2.c [2020-09-25 11:08:59,976 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:08:59,987 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:09:00,016 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:09:00,063 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:09:00,063 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:09:00,067 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:09:00,067 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:09:00,068 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:09:00,068 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:09:00,068 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:09:00,069 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:09:00,130 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-09-25 11:09:00,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 11:09:00,146 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:00,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:00,150 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:00,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:00,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1037734449, now seen corresponding path program 1 times [2020-09-25 11:09:00,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:00,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471408324] [2020-09-25 11:09:00,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:00,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:00,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:00,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:00,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:09:00,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:00,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 11:09:00,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:00,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:00,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:09:00,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:09:00,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:09:00,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:09:00,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:00,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:00,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:00,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:00,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:00,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:09:00,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:00,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:00,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:00,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:00,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:00,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:00,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:09:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:00,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:00,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:00,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:00,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:00,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 11:09:00,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:00,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:00,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:09:00,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:09:00,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:09:00,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:00,540 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 11:09:00,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471408324] [2020-09-25 11:09:00,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:09:00,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:09:00,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619300946] [2020-09-25 11:09:00,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:09:00,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:00,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:09:00,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:09:00,574 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-09-25 11:09:00,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:00,659 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-25 11:09:00,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:09:00,662 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 11:09:00,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:00,675 INFO L225 Difference]: With dead ends: 37 [2020-09-25 11:09:00,675 INFO L226 Difference]: Without dead ends: 23 [2020-09-25 11:09:00,680 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 11:09:00,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-25 11:09:00,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-25 11:09:00,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-25 11:09:00,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-09-25 11:09:00,738 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 16 [2020-09-25 11:09:00,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:00,739 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-09-25 11:09:00,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:09:00,739 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-09-25 11:09:00,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 11:09:00,741 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:00,742 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:00,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:09:00,742 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:00,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:00,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1478812441, now seen corresponding path program 1 times [2020-09-25 11:09:00,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:00,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432919003] [2020-09-25 11:09:00,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:00,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:00,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:00,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 11:09:00,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:00,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-09-25 11:09:00,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:00,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:00,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:09:00,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:09:00,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:09:00,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:00,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:00,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:00,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:00,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:00,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:00,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:00,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:09:00,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:00,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:00,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:00,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:00,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:00,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:00,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:09:00,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:01,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:01,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:01,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:09:01,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:01,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 11:09:01,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:01,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:01,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:09:01,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:09:01,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:09:01,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:09:01,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:01,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:01,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:01,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:01,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:01,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:01,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:09:01,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:01,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:01,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:01,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:01,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:09:01,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:01,188 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:09:01,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432919003] [2020-09-25 11:09:01,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:01,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:09:01,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333478735] [2020-09-25 11:09:01,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:09:01,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:01,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:09:01,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:09:01,192 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2020-09-25 11:09:01,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:01,278 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-09-25 11:09:01,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:09:01,279 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-25 11:09:01,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:01,281 INFO L225 Difference]: With dead ends: 34 [2020-09-25 11:09:01,281 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 11:09:01,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:09:01,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 11:09:01,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 11:09:01,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 11:09:01,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-09-25 11:09:01,291 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 24 [2020-09-25 11:09:01,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:01,291 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-09-25 11:09:01,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:09:01,292 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-09-25 11:09:01,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 11:09:01,293 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:01,293 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:01,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:09:01,294 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:01,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:01,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1463730447, now seen corresponding path program 2 times [2020-09-25 11:09:01,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:01,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522879206] [2020-09-25 11:09:01,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:01,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:01,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:01,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 11:09:01,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:01,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-09-25 11:09:01,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:01,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:01,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:09:01,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:09:01,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:09:01,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:01,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:01,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:01,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:01,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:01,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:01,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:01,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:09:01,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:01,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:01,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:01,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:01,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:01,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:01,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:09:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:01,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:01,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:01,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:09:01,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:01,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 11:09:01,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:01,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:01,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:09:01,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:09:01,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 11:09:01,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:01,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:01,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:01,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:01,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:09:01,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:01,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 11:09:01,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:01,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:01,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:01,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:01,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:09:01,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:01,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:01,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:01,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:01,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:01,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:01,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:01,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:09:01,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:01,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:01,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:01,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:01,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:09:01,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:01,923 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 11:09:01,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522879206] [2020-09-25 11:09:01,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:01,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:09:01,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410754480] [2020-09-25 11:09:01,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:09:01,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:01,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:09:01,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:09:01,926 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 8 states. [2020-09-25 11:09:02,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:02,007 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-25 11:09:02,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:09:02,008 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-09-25 11:09:02,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:02,010 INFO L225 Difference]: With dead ends: 39 [2020-09-25 11:09:02,010 INFO L226 Difference]: Without dead ends: 33 [2020-09-25 11:09:02,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:09:02,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-25 11:09:02,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-25 11:09:02,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-25 11:09:02,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-09-25 11:09:02,019 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 32 [2020-09-25 11:09:02,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:02,019 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-09-25 11:09:02,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:09:02,020 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-09-25 11:09:02,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 11:09:02,021 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:02,021 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:02,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:09:02,022 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:02,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:02,023 INFO L82 PathProgramCache]: Analyzing trace with hash 23346727, now seen corresponding path program 3 times [2020-09-25 11:09:02,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:02,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184189162] [2020-09-25 11:09:02,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:02,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:02,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:02,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 11:09:02,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:02,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-09-25 11:09:02,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:02,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:02,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:09:02,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:09:02,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:09:02,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:02,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:02,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:02,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:02,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:02,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:02,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:09:02,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:02,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:02,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:02,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:02,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:02,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:02,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:09:02,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:02,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:02,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:02,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 11:09:02,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:02,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-25 11:09:02,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:02,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:02,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:09:02,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:09:02,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 11:09:02,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:02,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:02,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:02,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:02,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:09:02,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:02,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 11:09:02,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:02,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:02,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:09:02,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:02,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:09:02,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:02,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:02,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:02,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:02,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:09:02,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:02,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 11:09:02,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:02,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:02,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:02,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:02,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:09:02,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:02,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:02,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:02,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:02,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:02,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:02,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:09:02,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:02,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:02,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:02,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:02,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:09:02,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:09:02,741 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 11:09:02,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184189162] [2020-09-25 11:09:02,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:02,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:09:02,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877684917] [2020-09-25 11:09:02,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:09:02,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:02,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:09:02,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:09:02,748 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 9 states. [2020-09-25 11:09:02,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:02,851 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2020-09-25 11:09:02,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 11:09:02,852 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-09-25 11:09:02,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:02,854 INFO L225 Difference]: With dead ends: 44 [2020-09-25 11:09:02,854 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 11:09:02,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:09:02,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 11:09:02,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-25 11:09:02,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 11:09:02,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-25 11:09:02,863 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 40 [2020-09-25 11:09:02,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:02,863 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-25 11:09:02,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:09:02,864 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-25 11:09:02,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 11:09:02,865 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:02,866 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:02,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:09:02,866 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:02,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:02,867 INFO L82 PathProgramCache]: Analyzing trace with hash -649675855, now seen corresponding path program 4 times [2020-09-25 11:09:02,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:02,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100817259] [2020-09-25 11:09:02,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:02,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:03,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:03,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 11:09:03,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:03,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-09-25 11:09:03,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:03,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:03,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:09:03,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:09:03,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 11:09:03,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:03,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:03,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:03,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:03,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:03,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:03,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:09:03,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:03,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:03,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:03,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:03,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:03,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:03,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:09:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:03,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:03,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:03,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 11:09:03,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:03,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-09-25 11:09:03,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:03,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:03,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:09:03,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:09:03,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 11:09:03,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:03,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:03,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:03,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:03,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 11:09:03,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:03,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-09-25 11:09:03,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:03,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:03,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:09:03,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:03,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 11:09:03,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:09:03,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:03,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:03,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:03,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:09:03,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:03,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-25 11:09:03,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:03,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:03,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:09:03,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:03,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:09:03,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:09:03,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:03,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:03,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:03,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:09:03,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:03,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 11:09:03,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:03,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:03,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:03,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:03,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:09:03,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:09:03,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:03,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:03,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:04,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:04,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:04,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:04,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:09:04,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:04,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:04,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:04,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:04,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:09:04,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 11:09:04,042 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 2 proven. 46 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 11:09:04,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100817259] [2020-09-25 11:09:04,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:04,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:09:04,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819850992] [2020-09-25 11:09:04,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:09:04,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:04,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:09:04,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:09:04,044 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 10 states. [2020-09-25 11:09:04,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:04,239 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-09-25 11:09:04,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 11:09:04,240 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-09-25 11:09:04,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:04,242 INFO L225 Difference]: With dead ends: 49 [2020-09-25 11:09:04,242 INFO L226 Difference]: Without dead ends: 43 [2020-09-25 11:09:04,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:09:04,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-25 11:09:04,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-25 11:09:04,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-25 11:09:04,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-09-25 11:09:04,250 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 48 [2020-09-25 11:09:04,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:04,250 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-09-25 11:09:04,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:09:04,251 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-09-25 11:09:04,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 11:09:04,253 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:04,253 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:04,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:09:04,253 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:04,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:04,254 INFO L82 PathProgramCache]: Analyzing trace with hash 899977063, now seen corresponding path program 5 times [2020-09-25 11:09:04,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:04,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103878864] [2020-09-25 11:09:04,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:04,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:04,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:04,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:04,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:09:04,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:04,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-09-25 11:09:04,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:04,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:04,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 11:09:04,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:09:04,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 11:09:04,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:04,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:04,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:04,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:04,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:04,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:04,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:09:04,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:04,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:04,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:04,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:04,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:04,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:04,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:09:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:04,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:04,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:04,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 11:09:04,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:04,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-09-25 11:09:04,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:04,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:04,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 11:09:04,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:09:04,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 11:09:04,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:04,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:04,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:05,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:05,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 11:09:05,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:05,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-09-25 11:09:05,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:05,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:05,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:09:05,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:05,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 11:09:05,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:05,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:05,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:05,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:05,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 11:09:05,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:05,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-25 11:09:05,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:05,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:05,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:09:05,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:05,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 11:09:05,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:05,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:05,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:05,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:05,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:09:05,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:05,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 11:09:05,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:05,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:05,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:09:05,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:05,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:09:05,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:05,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:05,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:05,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:05,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:05,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:09:05,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:05,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 11:09:05,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:05,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:05,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:05,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:05,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:09:05,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:05,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:05,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:05,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:05,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:05,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:05,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:09:05,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:05,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:05,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:05,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:05,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:09:05,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:05,546 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 10 proven. 62 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-25 11:09:05,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103878864] [2020-09-25 11:09:05,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:05,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:09:05,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236707095] [2020-09-25 11:09:05,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:09:05,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:05,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:09:05,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:09:05,549 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 11 states. [2020-09-25 11:09:05,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:05,649 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2020-09-25 11:09:05,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 11:09:05,650 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 56 [2020-09-25 11:09:05,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:05,652 INFO L225 Difference]: With dead ends: 54 [2020-09-25 11:09:05,652 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 11:09:05,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-09-25 11:09:05,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 11:09:05,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-25 11:09:05,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 11:09:05,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-09-25 11:09:05,660 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 56 [2020-09-25 11:09:05,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:05,660 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-09-25 11:09:05,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:09:05,661 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-09-25 11:09:05,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 11:09:05,662 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:05,662 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:05,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:09:05,663 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:05,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:05,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1000802417, now seen corresponding path program 6 times [2020-09-25 11:09:05,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:05,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72859931] [2020-09-25 11:09:05,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:05,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:06,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:06,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:09:06,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:06,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-09-25 11:09:06,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:06,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:06,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 11:09:06,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:09:06,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 11:09:06,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:06,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:06,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:06,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:06,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:06,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:06,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:09:06,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:06,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:06,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:06,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:06,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:06,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:06,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:09:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:06,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:06,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:06,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 11:09:06,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:06,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-09-25 11:09:06,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:06,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:06,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 11:09:06,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:09:06,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 11:09:06,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:06,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:06,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:06,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:06,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:06,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 11:09:06,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:06,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-09-25 11:09:06,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:06,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:06,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:09:06,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:06,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 11:09:06,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:06,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:06,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:06,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:06,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 11:09:06,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:06,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-25 11:09:06,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:06,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:06,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:09:06,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:06,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 11:09:06,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:07,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:07,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:07,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:07,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 11:09:07,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:07,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 11:09:07,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:07,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:07,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:09:07,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:07,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 11:09:07,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:07,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:07,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:07,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:07,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:09:07,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:07,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 11:09:07,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:07,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:07,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:09:07,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:07,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:09:07,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:09:07,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:07,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:07,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:07,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:07,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:09:07,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:07,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 11:09:07,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:07,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:07,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:07,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:07,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:09:07,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:09:07,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:07,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:07,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:07,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:07,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:07,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:07,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:09:07,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:07,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:07,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:07,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:07,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:09:07,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:09:07,498 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 10 proven. 103 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-09-25 11:09:07,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72859931] [2020-09-25 11:09:07,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:07,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 11:09:07,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71811708] [2020-09-25 11:09:07,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 11:09:07,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:07,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 11:09:07,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:09:07,509 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 13 states. [2020-09-25 11:09:07,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:07,672 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-25 11:09:07,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 11:09:07,674 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 64 [2020-09-25 11:09:07,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:07,675 INFO L225 Difference]: With dead ends: 59 [2020-09-25 11:09:07,675 INFO L226 Difference]: Without dead ends: 53 [2020-09-25 11:09:07,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=247, Unknown=0, NotChecked=0, Total=380 [2020-09-25 11:09:07,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-25 11:09:07,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-25 11:09:07,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 11:09:07,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-09-25 11:09:07,693 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 64 [2020-09-25 11:09:07,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:07,694 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-09-25 11:09:07,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 11:09:07,694 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-09-25 11:09:07,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 11:09:07,695 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:07,695 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:07,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 11:09:07,699 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:07,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:07,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1977618599, now seen corresponding path program 7 times [2020-09-25 11:09:07,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:07,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477358462] [2020-09-25 11:09:07,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:07,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:08,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:08,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 11:09:08,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:08,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 476 [2020-09-25 11:09:08,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:08,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:08,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 11:09:08,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:09:08,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 11:09:08,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:08,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:08,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:08,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:08,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:08,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:08,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:09:08,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:08,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:08,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:08,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:08,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:08,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:08,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:09:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:08,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:08,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:08,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 11:09:08,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:08,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 418 [2020-09-25 11:09:08,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:08,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:08,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 11:09:08,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:09:08,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 11:09:08,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:08,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:08,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:08,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:09,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:09,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 11:09:09,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:09,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-09-25 11:09:09,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:09,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:09,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 11:09:09,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:09,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 11:09:09,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:09,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:09,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:09,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:09,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 11:09:09,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:09,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-09-25 11:09:09,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:09,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:09,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:09:09,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:09,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 11:09:09,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:09,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:09,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:09,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:09,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 11:09:09,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:09,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-25 11:09:09,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:09,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:09,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:09:09,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:09,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 11:09:09,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:09,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:09,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:09,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:09,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 11:09:09,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:09,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 11:09:09,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:09,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:09,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:09:09,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:09,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 11:09:09,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:09,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:09,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:09,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:09,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:09:09,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:09,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 11:09:09,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:09,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:09,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:09:09,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:09,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:09:09,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:09,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:09,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:09,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:09,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:09,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:09:09,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:09,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 11:09:09,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:09,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:09,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:09,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:09,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:09:09,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:09,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:09,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:09,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:09,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:09,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:09,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:09,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:09:09,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:09,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:09,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:09,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:09,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:09:09,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:09,978 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 16 proven. 131 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-09-25 11:09:09,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477358462] [2020-09-25 11:09:09,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:09,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 11:09:09,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183044455] [2020-09-25 11:09:09,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 11:09:09,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:09,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 11:09:09,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:09:09,981 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 13 states. [2020-09-25 11:09:10,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:10,127 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2020-09-25 11:09:10,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:09:10,128 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 72 [2020-09-25 11:09:10,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:10,131 INFO L225 Difference]: With dead ends: 64 [2020-09-25 11:09:10,131 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 11:09:10,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2020-09-25 11:09:10,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 11:09:10,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-25 11:09:10,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 11:09:10,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-25 11:09:10,147 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 72 [2020-09-25 11:09:10,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:10,148 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-25 11:09:10,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 11:09:10,148 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-25 11:09:10,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 11:09:10,149 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:10,150 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:10,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 11:09:10,150 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:10,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:10,150 INFO L82 PathProgramCache]: Analyzing trace with hash 555623729, now seen corresponding path program 8 times [2020-09-25 11:09:10,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:10,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045968905] [2020-09-25 11:09:10,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:10,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:10,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:10,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:10,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-25 11:09:10,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:10,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 511 [2020-09-25 11:09:10,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:10,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:10,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 11:09:10,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:09:10,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 11:09:10,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:10,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:10,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:10,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:10,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:10,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:10,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:10,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:09:10,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:10,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:10,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:10,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:10,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:10,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:10,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:09:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:10,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:11,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:11,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 11:09:11,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:11,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 467 [2020-09-25 11:09:11,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:11,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:11,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 11:09:11,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:09:11,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 11:09:11,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:11,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:11,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:11,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:11,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:11,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 11:09:11,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:11,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-09-25 11:09:11,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:11,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:11,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 11:09:11,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:11,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 11:09:11,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:11,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:11,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:11,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:11,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:11,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 11:09:11,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:11,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-09-25 11:09:11,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:11,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:11,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 11:09:11,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:11,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 11:09:11,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:12,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:12,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:12,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:12,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 11:09:12,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:12,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-25 11:09:12,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:12,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:12,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:09:12,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:12,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 11:09:12,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:12,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:12,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:12,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:12,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 11:09:12,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:12,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-25 11:09:12,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:12,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:12,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:09:12,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:12,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 11:09:12,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:12,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:12,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:12,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:12,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 11:09:12,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:12,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 11:09:12,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:12,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:12,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:09:12,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:12,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 11:09:12,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:09:12,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:12,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:12,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:12,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:12,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:09:12,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:12,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 11:09:12,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:12,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:12,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:09:12,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:12,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:09:12,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:09:12,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:12,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:12,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:12,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:12,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:09:12,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:12,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 11:09:12,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:12,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:12,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:12,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:12,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:09:12,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:09:12,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:12,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:12,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:12,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:12,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:12,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:12,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:09:12,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:12,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:12,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:12,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:12,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:09:12,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:13,014 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 12 proven. 184 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-25 11:09:13,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045968905] [2020-09-25 11:09:13,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:13,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 11:09:13,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446935508] [2020-09-25 11:09:13,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 11:09:13,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:13,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 11:09:13,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:09:13,027 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 15 states. [2020-09-25 11:09:13,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:13,218 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2020-09-25 11:09:13,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 11:09:13,219 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 80 [2020-09-25 11:09:13,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:13,220 INFO L225 Difference]: With dead ends: 69 [2020-09-25 11:09:13,221 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 11:09:13,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=194, Invalid=358, Unknown=0, NotChecked=0, Total=552 [2020-09-25 11:09:13,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 11:09:13,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-09-25 11:09:13,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-25 11:09:13,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-09-25 11:09:13,237 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 80 [2020-09-25 11:09:13,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:13,237 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-09-25 11:09:13,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 11:09:13,237 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-09-25 11:09:13,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-25 11:09:13,240 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:13,240 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:13,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 11:09:13,241 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:13,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:13,241 INFO L82 PathProgramCache]: Analyzing trace with hash 777699815, now seen corresponding path program 9 times [2020-09-25 11:09:13,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:13,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [762763969] [2020-09-25 11:09:13,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:13,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:13,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:13,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:13,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 11:09:13,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:13,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 662 [2020-09-25 11:09:13,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:13,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:13,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 11:09:13,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:09:13,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 11:09:13,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:13,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:13,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:13,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:13,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:13,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:13,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:09:13,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:13,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:13,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:13,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:13,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:13,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:13,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:09:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:13,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:14,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:14,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 11:09:14,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:14,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 621 [2020-09-25 11:09:14,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:14,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:14,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 11:09:14,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:09:14,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 11:09:14,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:14,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:14,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:14,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:15,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:15,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 11:09:15,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:15,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 508 [2020-09-25 11:09:15,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:15,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:15,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 11:09:15,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:15,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-25 11:09:15,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:15,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:15,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:15,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:15,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 11:09:15,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:15,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 412 [2020-09-25 11:09:15,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:15,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:15,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 11:09:15,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:15,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 11:09:15,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:15,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:15,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:15,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:15,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 11:09:15,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:15,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-09-25 11:09:15,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:15,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:15,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 11:09:15,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:15,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 11:09:15,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:15,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:15,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:16,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:16,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 11:09:16,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:16,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-25 11:09:16,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:16,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:16,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:09:16,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:16,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 11:09:16,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:16,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:16,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:16,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:16,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:16,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 11:09:16,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:16,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 11:09:16,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:16,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:16,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:09:16,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:16,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 11:09:16,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:16,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:16,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:16,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:16,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:16,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 11:09:16,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:16,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 11:09:16,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:16,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:16,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:09:16,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:16,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 11:09:16,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:16,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:16,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:16,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:16,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:16,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:09:16,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:16,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 11:09:16,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:16,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:16,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:09:16,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:16,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:09:16,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:16,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:16,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:16,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:16,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:16,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:09:16,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:16,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 11:09:16,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:16,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:16,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:16,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:16,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:09:16,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:16,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:16,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:16,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:16,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:16,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:16,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:16,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:09:16,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:16,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:16,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:16,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:16,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:09:16,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:16,749 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 26 proven. 214 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-09-25 11:09:16,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [762763969] [2020-09-25 11:09:16,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:16,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 11:09:16,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039414675] [2020-09-25 11:09:16,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 11:09:16,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:16,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 11:09:16,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:09:16,752 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 15 states. [2020-09-25 11:09:16,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:16,918 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2020-09-25 11:09:16,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:09:16,919 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 88 [2020-09-25 11:09:16,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:16,920 INFO L225 Difference]: With dead ends: 74 [2020-09-25 11:09:16,921 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 11:09:16,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=387, Unknown=0, NotChecked=0, Total=600 [2020-09-25 11:09:16,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 11:09:16,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-25 11:09:16,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-25 11:09:16,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2020-09-25 11:09:16,940 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 88 [2020-09-25 11:09:16,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:16,942 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2020-09-25 11:09:16,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 11:09:16,942 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2020-09-25 11:09:16,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-25 11:09:16,943 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:16,943 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:16,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 11:09:16,944 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:16,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:16,947 INFO L82 PathProgramCache]: Analyzing trace with hash 2145915377, now seen corresponding path program 10 times [2020-09-25 11:09:16,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:16,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583795204] [2020-09-25 11:09:16,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:16,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:17,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:17,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 11:09:17,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:17,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 744 [2020-09-25 11:09:17,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:17,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:17,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 11:09:17,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-25 11:09:17,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 11:09:17,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:17,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:17,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:17,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:17,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:17,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:17,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:09:17,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:17,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:17,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:17,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:17,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:17,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:17,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:09:17,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:17,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:18,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:18,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 11:09:18,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:18,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 650 [2020-09-25 11:09:18,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:18,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:18,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 11:09:18,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:18,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 11:09:18,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:18,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:18,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:19,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:19,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 11:09:19,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:19,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 544 [2020-09-25 11:09:19,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:19,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:19,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 11:09:19,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:19,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 11:09:19,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:19,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:19,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:19,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:19,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:19,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 11:09:19,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:19,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 442 [2020-09-25 11:09:19,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:19,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:19,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 11:09:19,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:19,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 11:09:19,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 11:09:19,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:19,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:19,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:19,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:19,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 11:09:19,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:19,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-09-25 11:09:19,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:19,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:19,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 11:09:19,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:19,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 11:09:19,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:19,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:19,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:20,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:20,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 11:09:20,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:20,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-09-25 11:09:20,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:20,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:20,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:09:20,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:20,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 11:09:20,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:20,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:20,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:20,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:20,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 11:09:20,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:20,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-09-25 11:09:20,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:20,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:20,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:09:20,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:20,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 11:09:20,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:20,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:20,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:20,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:20,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:20,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 11:09:20,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:20,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 11:09:20,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:20,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:20,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:09:20,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:20,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 11:09:20,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:20,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:20,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:20,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:20,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 11:09:20,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:20,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 11:09:20,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:20,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:20,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:09:20,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:20,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 11:09:20,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:20,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:20,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:20,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:20,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:20,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:09:20,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:20,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 11:09:20,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:20,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:20,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:20,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:20,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 11:09:20,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:21,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:21,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:21,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:21,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:09:21,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:21,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 11:09:21,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:21,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:21,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:21,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:21,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:09:21,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:21,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:21,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:21,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:21,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:21,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:21,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:09:21,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:21,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:21,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:09:21,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:21,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:09:21,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:21,225 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-09-25 11:09:21,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583795204] [2020-09-25 11:09:21,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:21,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 11:09:21,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798570115] [2020-09-25 11:09:21,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 11:09:21,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:21,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 11:09:21,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-09-25 11:09:21,228 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 25 states. [2020-09-25 11:09:22,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:22,068 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-09-25 11:09:22,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-25 11:09:22,069 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 96 [2020-09-25 11:09:22,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:22,071 INFO L225 Difference]: With dead ends: 79 [2020-09-25 11:09:22,071 INFO L226 Difference]: Without dead ends: 73 [2020-09-25 11:09:22,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=1169, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 11:09:22,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-25 11:09:22,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-09-25 11:09:22,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-25 11:09:22,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2020-09-25 11:09:22,080 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 96 [2020-09-25 11:09:22,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:22,080 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2020-09-25 11:09:22,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-25 11:09:22,080 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2020-09-25 11:09:22,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-25 11:09:22,081 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:09:22,081 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:09:22,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 11:09:22,082 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:09:22,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:09:22,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1180214055, now seen corresponding path program 11 times [2020-09-25 11:09:22,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:09:22,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461072498] [2020-09-25 11:09:22,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:09:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:22,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:22,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:23,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:23,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 11:09:23,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:09:23,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1336 [2020-09-25 11:09:23,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:23,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:23,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 11:09:23,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:09:23,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 11:09:23,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:23,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:09:23,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:23,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:23,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:23,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:09:23,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:23,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:09:23,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:23,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:23,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:09:23,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:23,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:09:23,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:23,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:09:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:23,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:23,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:25,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:25,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 11:09:25,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:09:25,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1541 [2020-09-25 11:09:25,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:25,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:25,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 11:09:25,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:09:25,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 11:09:25,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:25,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:25,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:25,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:26,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:26,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 11:09:26,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:09:26,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1037 [2020-09-25 11:09:26,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:26,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:26,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 11:09:26,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:26,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 11:09:26,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:26,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:26,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:26,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:27,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:27,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 11:09:27,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:09:27,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1085 [2020-09-25 11:09:27,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:27,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:27,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 11:09:27,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:27,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-25 11:09:27,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:27,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:27,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:27,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:28,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:28,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 11:09:28,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:09:28,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 822 [2020-09-25 11:09:28,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:28,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:28,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 11:09:28,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:28,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-25 11:09:28,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:28,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:28,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:28,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:28,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:28,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 11:09:28,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:09:28,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 656 [2020-09-25 11:09:28,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:28,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:28,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 11:09:28,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:28,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 11:09:28,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:28,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:28,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:28,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:29,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:29,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 11:09:29,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:09:29,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 635 [2020-09-25 11:09:29,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:29,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:29,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:09:29,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:29,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 11:09:29,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:29,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:29,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:29,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:29,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:29,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:29,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 11:09:29,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:09:29,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-09-25 11:09:29,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:29,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:29,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:09:29,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:29,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 11:09:29,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:29,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:29,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:29,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:30,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:30,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 11:09:30,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:09:30,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-09-25 11:09:30,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:30,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:30,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:09:30,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:30,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 11:09:30,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:30,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:30,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:30,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:30,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:30,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 11:09:30,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:09:30,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-25 11:09:30,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:30,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:30,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:09:30,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:30,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 11:09:30,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:30,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:30,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:30,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:30,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:30,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:30,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:09:30,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:09:30,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 11:09:30,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:30,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:30,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:09:30,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:30,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:09:30,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:30,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:30,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:30,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:30,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:30,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:30,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:09:30,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:09:30,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 11:09:30,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:30,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:30,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:09:30,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:30,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:09:30,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:09:30,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:09:30,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:09:30,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:09:30,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:09:30,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:09:30,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:09:30,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:09:30,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:09:30,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:09:30,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:09:30,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:09:30,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:09:30,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:09:30,676 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 22 proven. 296 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2020-09-25 11:09:30,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1461072498] [2020-09-25 11:09:30,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:09:30,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 11:09:30,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763019817] [2020-09-25 11:09:30,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 11:09:30,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:09:30,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 11:09:30,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:09:30,679 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 15 states. [2020-09-25 11:09:32,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:09:32,737 INFO L93 Difference]: Finished difference Result 150 states and 259 transitions. [2020-09-25 11:09:32,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-25 11:09:32,737 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 104 [2020-09-25 11:09:32,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:09:32,738 INFO L225 Difference]: With dead ends: 150 [2020-09-25 11:09:32,738 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 11:09:32,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 41 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=564, Invalid=1416, Unknown=0, NotChecked=0, Total=1980 [2020-09-25 11:09:32,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 11:09:32,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 11:09:32,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 11:09:32,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 11:09:32,743 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 104 [2020-09-25 11:09:32,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:09:32,743 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 11:09:32,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 11:09:32,743 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 11:09:32,743 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 11:09:32,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 11:09:32,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 11:09:33,046 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 7 [2020-09-25 11:09:33,051 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 11:09:33,051 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 11:09:33,051 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 11:09:33,051 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 11:09:33,051 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 11:09:33,051 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 11:09:33,052 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-09-25 11:09:33,052 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 9 15) the Hoare annotation is: true [2020-09-25 11:09:33,052 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 9 15) no Hoare annotation was computed. [2020-09-25 11:09:33,052 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-25 11:09:33,052 INFO L268 CegarLoopResult]: For program point L12(lines 12 14) no Hoare annotation was computed. [2020-09-25 11:09:33,052 INFO L264 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: (and (<= 10 main_~input~0) (<= main_~input~0 10)) [2020-09-25 11:09:33,052 INFO L268 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-09-25 11:09:33,053 INFO L268 CegarLoopResult]: For program point L12-2(lines 9 15) no Hoare annotation was computed. [2020-09-25 11:09:33,053 INFO L268 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-09-25 11:09:33,053 INFO L268 CegarLoopResult]: For program point L11-3(line 11) no Hoare annotation was computed. [2020-09-25 11:09:33,053 INFO L268 CegarLoopResult]: For program point idFINAL(lines 4 7) no Hoare annotation was computed. [2020-09-25 11:09:33,053 INFO L268 CegarLoopResult]: For program point idEXIT(lines 4 7) no Hoare annotation was computed. [2020-09-25 11:09:33,053 INFO L271 CegarLoopResult]: At program point idENTRY(lines 4 7) the Hoare annotation is: true [2020-09-25 11:09:33,053 INFO L264 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: (and (= |id_#in~x| id_~x) (not (= |id_#in~x| 0))) [2020-09-25 11:09:33,054 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 11:09:33,054 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-25 11:09:33,054 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-25 11:09:33,054 INFO L268 CegarLoopResult]: For program point L6-2(line 6) no Hoare annotation was computed. [2020-09-25 11:09:33,054 INFO L268 CegarLoopResult]: For program point L6-3(line 6) no Hoare annotation was computed. [2020-09-25 11:09:33,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 11:09:33 BoogieIcfgContainer [2020-09-25 11:09:33,062 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 11:09:33,064 INFO L168 Benchmark]: Toolchain (without parser) took 33843.39 ms. Allocated memory was 140.0 MB in the beginning and 437.3 MB in the end (delta: 297.3 MB). Free memory was 103.6 MB in the beginning and 236.4 MB in the end (delta: -132.9 MB). Peak memory consumption was 164.4 MB. Max. memory is 7.1 GB. [2020-09-25 11:09:33,065 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 11:09:33,066 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.77 ms. Allocated memory is still 140.0 MB. Free memory was 102.9 MB in the beginning and 93.8 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-09-25 11:09:33,067 INFO L168 Benchmark]: Boogie Preprocessor took 107.67 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 93.8 MB in the beginning and 181.0 MB in the end (delta: -87.2 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-25 11:09:33,067 INFO L168 Benchmark]: RCFGBuilder took 281.35 ms. Allocated memory is still 201.9 MB. Free memory was 181.0 MB in the beginning and 169.0 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. [2020-09-25 11:09:33,068 INFO L168 Benchmark]: TraceAbstraction took 33107.98 ms. Allocated memory was 201.9 MB in the beginning and 437.3 MB in the end (delta: 235.4 MB). Free memory was 168.4 MB in the beginning and 236.4 MB in the end (delta: -68.0 MB). Peak memory consumption was 167.4 MB. Max. memory is 7.1 GB. [2020-09-25 11:09:33,072 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 332.77 ms. Allocated memory is still 140.0 MB. Free memory was 102.9 MB in the beginning and 93.8 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.67 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 93.8 MB in the beginning and 181.0 MB in the end (delta: -87.2 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 281.35 ms. Allocated memory is still 201.9 MB. Free memory was 181.0 MB in the beginning and 169.0 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 33107.98 ms. Allocated memory was 201.9 MB in the beginning and 437.3 MB in the end (delta: 235.4 MB). Free memory was 168.4 MB in the beginning and 236.4 MB in the end (delta: -68.0 MB). Peak memory consumption was 167.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 32.6s, OverallIterations: 12, TraceHistogramMax: 12, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 284 SDtfs, 659 SDslu, 1710 SDs, 0 SdLazy, 1255 SolverSat, 204 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 420 GetRequests, 194 SyntacticMatches, 8 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 27 PreInvPairs, 27 NumberOfFragments, 20 HoareAnnotationTreeSize, 27 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 843 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 27.6s InterpolantComputationTime, 720 NumberOfCodeBlocks, 720 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 708 ConstructedInterpolants, 0 QuantifiedInterpolants, 168086 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 1 PerfectInterpolantSequences, 708/2024 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...