/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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_15-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:22:24,851 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:22:24,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:22:24,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:22:24,885 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:22:24,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:22:24,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:22:24,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:22:24,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:22:24,903 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:22:24,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:22:24,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:22:24,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:22:24,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:22:24,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:22:24,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:22:24,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:22:24,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:22:24,921 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:22:24,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:22:24,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:22:24,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:22:24,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:22:24,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:22:24,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:22:24,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:22:24,946 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:22:24,949 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:22:24,951 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:22:24,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:22:24,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:22:24,954 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:22:24,955 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:22:24,956 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:22:24,957 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:22:24,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:22:24,958 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:22:24,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:22:24,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:22:24,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:22:24,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:22:24,963 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 13:22:25,016 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:22:25,016 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:22:25,018 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:22:25,019 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:22:25,019 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:22:25,019 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:22:25,020 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:22:25,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:22:25,020 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:22:25,020 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:22:25,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:22:25,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:22:25,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:22:25,022 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:22:25,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:22:25,023 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:22:25,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:22:25,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:22:25,023 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:22:25,023 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:22:25,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:22:25,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:22:25,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:22:25,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:22:25,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:22:25,025 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:22:25,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:22:25,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:22:25,025 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:22:25,025 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 13:22:25,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:22:25,582 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:22:25,586 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:22:25,587 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:22:25,588 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:22:25,589 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_15-1.c [2020-09-25 13:22:25,681 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b427ac0c5/d916394f50cf4afc9aef1b132285df6a/FLAG948c5da10 [2020-09-25 13:22:26,253 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:22:26,254 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_15-1.c [2020-09-25 13:22:26,264 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b427ac0c5/d916394f50cf4afc9aef1b132285df6a/FLAG948c5da10 [2020-09-25 13:22:26,589 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b427ac0c5/d916394f50cf4afc9aef1b132285df6a [2020-09-25 13:22:26,603 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:22:26,609 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:22:26,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:22:26,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:22:26,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:22:26,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:22:26" (1/1) ... [2020-09-25 13:22:26,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cc40f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:26, skipping insertion in model container [2020-09-25 13:22:26,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:22:26" (1/1) ... [2020-09-25 13:22:26,631 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:22:26,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:22:26,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:22:26,884 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:22:26,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:22:26,918 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:22:26,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:26 WrapperNode [2020-09-25 13:22:26,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:22:26,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:22:26,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:22:26,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:22:26,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:26" (1/1) ... [2020-09-25 13:22:26,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:26" (1/1) ... [2020-09-25 13:22:26,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:26" (1/1) ... [2020-09-25 13:22:26,941 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:26" (1/1) ... [2020-09-25 13:22:27,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:26" (1/1) ... [2020-09-25 13:22:27,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:26" (1/1) ... [2020-09-25 13:22:27,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:26" (1/1) ... [2020-09-25 13:22:27,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:22:27,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:22:27,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:22:27,036 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:22:27,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:22:27,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:22:27,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:22:27,119 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 13:22:27,119 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 13:22:27,119 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:22:27,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:22:27,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:22:27,120 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 13:22:27,120 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 13:22:27,120 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:22:27,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:22:27,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:22:27,486 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:22:27,487 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 13:22:27,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:22:27 BoogieIcfgContainer [2020-09-25 13:22:27,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:22:27,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:22:27,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:22:27,497 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:22:27,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:22:26" (1/3) ... [2020-09-25 13:22:27,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75437766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:22:27, skipping insertion in model container [2020-09-25 13:22:27,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:26" (2/3) ... [2020-09-25 13:22:27,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75437766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:22:27, skipping insertion in model container [2020-09-25 13:22:27,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:22:27" (3/3) ... [2020-09-25 13:22:27,502 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_15-1.c [2020-09-25 13:22:27,514 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:22:27,523 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:22:27,545 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:22:27,575 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:22:27,575 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:22:27,575 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:22:27,575 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:22:27,575 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:22:27,576 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:22:27,576 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:22:27,576 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:22:27,597 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 13:22:27,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 13:22:27,604 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:27,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:27,605 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:27,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:27,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 13:22:27,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:27,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145520547] [2020-09-25 13:22:27,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:27,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:27,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:27,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:27,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:27,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:22:27,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:22:27,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-09-25 13:22:27,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:27,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:27,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:22:27,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 13:22:27,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:22:27,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:22:28,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:28,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:28,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:28,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:28,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:28,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:22:28,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:28,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:28,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:28,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:28,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:28,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:28,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:22:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:28,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:28,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:28,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:28,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:28,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:22:28,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:28,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:28,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:22:28,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:28,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:22:28,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:28,151 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 13:22:28,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145520547] [2020-09-25 13:22:28,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:22:28,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:22:28,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686457239] [2020-09-25 13:22:28,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:22:28,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:28,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:22:28,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:22:28,186 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 13:22:28,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:28,284 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 13:22:28,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:22:28,286 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 13:22:28,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:28,300 INFO L225 Difference]: With dead ends: 58 [2020-09-25 13:22:28,301 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 13:22:28,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:22:28,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 13:22:28,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 13:22:28,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 13:22:28,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 13:22:28,370 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 13:22:28,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:28,371 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 13:22:28,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:22:28,371 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 13:22:28,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 13:22:28,374 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:28,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:28,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:22:28,375 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:28,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:28,376 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 13:22:28,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:28,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721536756] [2020-09-25 13:22:28,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:28,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:28,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:28,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:28,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 13:22:28,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:22:28,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-25 13:22:28,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:28,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:28,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:22:28,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:22:28,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:22:28,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:28,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:28,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:28,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:28,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:28,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:28,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:22:28,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:28,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:28,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:28,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:28,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:28,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:28,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:22:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:28,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:28,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:28,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:28,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:28,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 13:22:28,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:28,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:28,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:22:28,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:28,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:22:28,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:28,633 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 13:22:28,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721536756] [2020-09-25 13:22:28,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:22:28,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:22:28,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784418919] [2020-09-25 13:22:28,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:22:28,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:28,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:22:28,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:22:28,641 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 13:22:28,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:28,711 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 13:22:28,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:22:28,712 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 13:22:28,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:28,714 INFO L225 Difference]: With dead ends: 50 [2020-09-25 13:22:28,715 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 13:22:28,716 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 13:22:28,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 13:22:28,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 13:22:28,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 13:22:28,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 13:22:28,727 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 13:22:28,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:28,728 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 13:22:28,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:22:28,728 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 13:22:28,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 13:22:28,730 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:28,731 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:28,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:22:28,731 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:28,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:28,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 13:22:28,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:28,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519546177] [2020-09-25 13:22:28,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:28,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:28,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:28,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:28,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:29,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:30,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:30,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 13:22:30,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:22:30,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2062 [2020-09-25 13:22:30,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:30,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:30,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:30,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:22:30,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 13:22:30,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:30,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:30,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:30,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:30,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:30,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:30,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:22:30,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:30,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:30,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:30,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:30,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:30,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:30,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:22:30,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:30,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:30,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:30,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:31,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:31,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:22:31,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:22:31,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-09-25 13:22:31,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:31,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:31,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:31,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:31,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:22:31,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:31,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:31,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:31,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:31,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:31,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:31,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:22:31,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:31,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:31,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:31,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:31,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:22:31,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:31,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:22:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:31,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:31,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:31,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:31,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:31,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 13:22:31,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:31,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:31,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:22:31,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:31,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:22:31,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:31,173 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:22:31,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519546177] [2020-09-25 13:22:31,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:22:31,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:22:31,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097188894] [2020-09-25 13:22:31,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:22:31,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:31,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:22:31,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:22:31,185 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 13:22:31,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:31,364 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 13:22:31,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:22:31,365 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 13:22:31,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:31,372 INFO L225 Difference]: With dead ends: 58 [2020-09-25 13:22:31,372 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 13:22:31,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:22:31,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 13:22:31,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 13:22:31,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 13:22:31,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 13:22:31,397 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 13:22:31,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:31,397 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 13:22:31,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:22:31,398 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 13:22:31,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 13:22:31,402 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:31,403 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:31,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:22:31,403 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:31,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:31,405 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 13:22:31,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:31,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052924144] [2020-09-25 13:22:31,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:31,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:31,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:31,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:31,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:31,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:33,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:33,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 13:22:33,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:22:33,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1930 [2020-09-25 13:22:33,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:33,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:33,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:33,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 13:22:33,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 13:22:33,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:33,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:33,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:33,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:33,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:33,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:33,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:22:33,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:33,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:33,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:33,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:33,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:33,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:33,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:22:33,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:33,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:33,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:33,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:33,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:22:33,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:22:33,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 13:22:33,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:33,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:33,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:33,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:22:33,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 13:22:33,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:33,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:33,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:33,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:33,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:33,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:33,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:22:33,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:33,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:33,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:22:33,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:33,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:22:33,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:33,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:22:33,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:33,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:33,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:33,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:33,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:33,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:22:33,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 13:22:33,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:33,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:33,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:22:33,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:33,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:22:33,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:22:33,594 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:22:33,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052924144] [2020-09-25 13:22:33,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:22:33,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:22:33,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760718180] [2020-09-25 13:22:33,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:22:33,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:33,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:22:33,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:22:33,597 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 13:22:33,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:33,736 INFO L93 Difference]: Finished difference Result 104 states and 138 transitions. [2020-09-25 13:22:33,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:22:33,738 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 13:22:33,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:33,740 INFO L225 Difference]: With dead ends: 104 [2020-09-25 13:22:33,740 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 13:22:33,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:22:33,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 13:22:33,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-09-25 13:22:33,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 13:22:33,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2020-09-25 13:22:33,754 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 35 [2020-09-25 13:22:33,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:33,754 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2020-09-25 13:22:33,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:22:33,755 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2020-09-25 13:22:33,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 13:22:33,758 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:33,758 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:33,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:22:33,758 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:33,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:33,759 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 13:22:33,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:33,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527990345] [2020-09-25 13:22:33,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:33,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:33,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:33,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:33,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:33,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:33,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:34,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:34,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:37,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:38,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:38,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 13:22:38,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:22:38,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 13:22:38,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:38,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:38,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:38,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:22:38,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 13:22:38,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:38,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:38,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:38,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:38,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:38,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:38,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:22:38,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:38,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:38,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:38,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:38,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:38,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:38,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:22:38,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:38,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:38,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:38,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:38,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:39,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:39,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:39,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:42,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:42,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 13:22:42,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:22:42,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3483 [2020-09-25 13:22:42,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:42,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:42,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:42,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:42,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 13:22:42,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:42,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:42,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:42,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:42,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:42,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:42,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:22:42,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:22:42,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 13:22:42,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:42,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:42,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:42,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:42,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:22:42,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:42,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:42,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:42,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:42,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:42,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:42,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:42,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:22:42,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:42,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:42,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:42,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:42,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:42,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:22:42,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:22:42,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:42,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:42,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:42,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:42,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:42,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:22:42,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:42,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:42,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:42,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:42,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:42,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:42,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:22:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:42,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:42,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:42,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:42,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:42,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 13:22:42,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:42,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:42,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:22:42,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:42,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:22:42,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:42,554 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 13:22:42,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527990345] [2020-09-25 13:22:42,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:22:42,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:22:42,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153849228] [2020-09-25 13:22:42,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:22:42,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:42,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:22:42,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:22:42,556 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand 7 states. [2020-09-25 13:22:42,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:42,692 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2020-09-25 13:22:42,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:22:42,692 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 13:22:42,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:42,694 INFO L225 Difference]: With dead ends: 66 [2020-09-25 13:22:42,694 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 13:22:42,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:22:42,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 13:22:42,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-09-25 13:22:42,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 13:22:42,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2020-09-25 13:22:42,705 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 51 [2020-09-25 13:22:42,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:42,706 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2020-09-25 13:22:42,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:22:42,706 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2020-09-25 13:22:42,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 13:22:42,709 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:42,709 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:42,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:22:42,709 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:42,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:42,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 13:22:42,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:42,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600006968] [2020-09-25 13:22:42,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:42,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:42,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:42,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:42,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:42,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:43,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:43,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:43,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:43,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:43,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:43,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:47,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:47,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 13:22:47,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 13:22:47,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 13:22:47,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:47,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:47,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:22:47,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:22:47,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 13:22:47,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:47,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:47,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:47,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:47,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:47,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:47,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:22:47,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:47,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:47,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:47,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:47,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:47,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:47,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:22:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:47,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:47,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:47,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:47,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:47,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:48,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:48,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:49,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:49,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:52,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:52,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 13:22:52,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:22:52,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 13:22:52,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:52,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:52,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:22:52,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:22:52,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 13:22:52,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:52,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:52,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:52,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:52,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:52,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:22:52,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:22:52,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 13:22:52,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:52,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:52,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:52,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:52,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:22:52,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:52,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:52,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:52,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:52,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:52,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:52,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:22:52,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:52,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:52,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:22:52,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:52,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:22:52,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:52,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:22:52,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:52,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:52,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:52,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:52,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:52,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:22:52,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:52,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:52,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:52,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:52,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:22:52,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:52,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:22:52,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:52,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:52,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:53,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:53,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:22:53,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:22:53,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 13:22:53,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:53,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:53,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:22:53,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:53,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:22:53,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:53,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:53,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:53,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:53,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:53,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:53,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:53,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:22:53,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:53,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:53,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:53,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:53,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:22:53,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:53,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:22:53,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:53,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:53,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:53,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:53,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:53,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:22:53,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:53,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:53,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:53,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:53,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:22:53,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:53,107 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 9 proven. 23 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 13:22:53,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600006968] [2020-09-25 13:22:53,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:22:53,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:22:53,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429383382] [2020-09-25 13:22:53,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:22:53,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:53,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:22:53,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:22:53,111 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand 10 states. [2020-09-25 13:22:53,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:53,460 INFO L93 Difference]: Finished difference Result 136 states and 188 transitions. [2020-09-25 13:22:53,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:22:53,461 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-09-25 13:22:53,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:53,463 INFO L225 Difference]: With dead ends: 136 [2020-09-25 13:22:53,463 INFO L226 Difference]: Without dead ends: 88 [2020-09-25 13:22:53,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:22:53,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-25 13:22:53,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 76. [2020-09-25 13:22:53,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 13:22:53,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 95 transitions. [2020-09-25 13:22:53,480 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 95 transitions. Word has length 67 [2020-09-25 13:22:53,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:53,481 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 95 transitions. [2020-09-25 13:22:53,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:22:53,481 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 95 transitions. [2020-09-25 13:22:53,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-25 13:22:53,483 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:53,484 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:53,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:22:53,484 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:53,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:53,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1454118782, now seen corresponding path program 1 times [2020-09-25 13:22:53,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:53,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757106046] [2020-09-25 13:22:53,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:53,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:53,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:53,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:53,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:53,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:54,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:54,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:54,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:54,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:54,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:54,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:54,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:58,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:58,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:58,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 13:22:58,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 13:22:58,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 13:22:58,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:58,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:58,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:22:58,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 13:22:58,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 13:22:58,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:58,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:58,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:58,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:58,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:58,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:58,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:22:58,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:58,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:58,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:58,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:58,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:58,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:58,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:22:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:58,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:58,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:58,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:58,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:58,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:58,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:58,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:59,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:59,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:03,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:03,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:23:03,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:23:03,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 13:23:03,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:03,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:03,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:23:03,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:23:03,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 13:23:03,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:03,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:03,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:03,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:03,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:03,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:03,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:23:03,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:23:03,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-09-25 13:23:03,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:03,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:03,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:03,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:03,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:23:03,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:03,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:03,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:03,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:03,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:03,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:03,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:23:03,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:03,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:03,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:03,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:03,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:23:03,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:03,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:23:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:03,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:03,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:03,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:03,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:03,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:23:03,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:03,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:03,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:03,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:03,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:03,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:03,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:23:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:03,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:03,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:04,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:04,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:23:04,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:04,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 13:23:04,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:04,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:04,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:23:04,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:04,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:23:04,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:04,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:04,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:04,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:04,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:04,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:04,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:23:04,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:04,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:04,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:04,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:04,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:04,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:04,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:23:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:04,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:04,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:04,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:04,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:04,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:23:04,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:04,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:04,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:04,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:04,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:04,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:04,112 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 13:23:04,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757106046] [2020-09-25 13:23:04,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:23:04,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:23:04,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668252529] [2020-09-25 13:23:04,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:23:04,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:04,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:23:04,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:23:04,115 INFO L87 Difference]: Start difference. First operand 76 states and 95 transitions. Second operand 9 states. [2020-09-25 13:23:04,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:04,292 INFO L93 Difference]: Finished difference Result 166 states and 226 transitions. [2020-09-25 13:23:04,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:23:04,293 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-09-25 13:23:04,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:04,295 INFO L225 Difference]: With dead ends: 166 [2020-09-25 13:23:04,295 INFO L226 Difference]: Without dead ends: 96 [2020-09-25 13:23:04,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:23:04,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-25 13:23:04,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-09-25 13:23:04,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-09-25 13:23:04,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 122 transitions. [2020-09-25 13:23:04,310 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 122 transitions. Word has length 68 [2020-09-25 13:23:04,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:04,310 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 122 transitions. [2020-09-25 13:23:04,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:23:04,310 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 122 transitions. [2020-09-25 13:23:04,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 13:23:04,312 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:04,313 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:23:04,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:23:04,313 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:04,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:04,313 INFO L82 PathProgramCache]: Analyzing trace with hash 2120760888, now seen corresponding path program 1 times [2020-09-25 13:23:04,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:04,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732966684] [2020-09-25 13:23:04,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:04,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:04,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:04,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:04,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:04,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:04,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:04,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:04,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:04,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:04,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:04,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:06,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:06,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:06,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:09,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:09,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-09-25 13:23:09,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 13:23:09,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 13:23:09,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:09,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:09,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:23:09,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:09,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 13:23:09,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:09,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:09,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:09,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:09,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:09,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:09,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:09,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:23:09,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:09,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:09,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:09,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:09,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:09,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:09,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:09,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:09,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:09,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:09,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:09,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:09,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:09,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:09,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:09,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:09,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:10,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:10,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:10,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:11,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:11,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:11,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:11,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:11,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:12,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:12,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:12,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:14,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:14,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 13:23:14,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-09-25 13:23:14,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 13:23:14,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:14,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:14,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 13:23:14,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:23:14,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 13:23:14,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:14,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:14,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:14,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:14,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:14,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:14,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:14,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:14,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:15,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:15,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 13:23:15,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:23:15,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1376 [2020-09-25 13:23:15,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:15,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:15,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:15,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:15,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 13:23:15,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:15,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:15,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:15,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:15,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:15,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:15,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:23:15,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:15,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 13:23:15,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:15,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:15,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:15,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:15,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:23:15,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:15,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:15,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:15,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:15,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:15,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:15,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:23:15,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:15,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:15,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:15,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:15,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:15,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:15,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:23:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:15,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:15,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:15,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:15,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:15,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:23:15,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:15,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:15,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:15,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:15,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:15,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:15,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:23:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:15,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:15,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:15,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:15,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:15,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:23:15,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:15,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:15,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:15,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:15,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:15,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:15,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 13:23:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:15,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:15,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:15,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:16,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:16,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:16,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:16,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:16,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 13:23:16,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:23:16,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 779 [2020-09-25 13:23:16,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:16,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:16,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:23:16,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:23:16,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 13:23:16,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:16,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:16,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:16,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:16,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:16,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:16,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:23:16,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:16,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 13:23:16,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:16,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:16,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:16,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:16,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:23:16,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:16,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:16,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:16,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:16,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:16,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:16,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:16,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:23:16,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:16,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:16,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:16,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:16,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:16,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:16,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:23:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:16,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:16,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:16,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:16,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:16,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:23:16,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:16,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:16,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:16,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:16,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:16,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:16,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:23:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:16,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:16,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:16,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:16,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:16,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:23:16,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:16,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:16,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:23:16,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:16,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:16,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:17,005 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 61 proven. 18 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-25 13:23:17,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732966684] [2020-09-25 13:23:17,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:23:17,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 13:23:17,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083769145] [2020-09-25 13:23:17,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 13:23:17,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:17,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 13:23:17,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:23:17,008 INFO L87 Difference]: Start difference. First operand 96 states and 122 transitions. Second operand 13 states. [2020-09-25 13:23:17,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:17,407 INFO L93 Difference]: Finished difference Result 211 states and 282 transitions. [2020-09-25 13:23:17,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 13:23:17,408 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 101 [2020-09-25 13:23:17,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:17,411 INFO L225 Difference]: With dead ends: 211 [2020-09-25 13:23:17,411 INFO L226 Difference]: Without dead ends: 121 [2020-09-25 13:23:17,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2020-09-25 13:23:17,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-09-25 13:23:17,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 99. [2020-09-25 13:23:17,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-09-25 13:23:17,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 124 transitions. [2020-09-25 13:23:17,428 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 124 transitions. Word has length 101 [2020-09-25 13:23:17,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:17,429 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 124 transitions. [2020-09-25 13:23:17,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 13:23:17,429 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 124 transitions. [2020-09-25 13:23:17,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 13:23:17,436 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:17,436 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:23:17,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 13:23:17,436 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:17,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:17,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1957044445, now seen corresponding path program 1 times [2020-09-25 13:23:17,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:17,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112680916] [2020-09-25 13:23:17,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:17,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:17,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:17,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:17,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:17,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:17,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:17,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:18,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:18,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:18,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:18,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:18,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:19,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:19,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:20,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:20,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking...