/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:30:45,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:30:45,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:30:45,987 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:30:45,988 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:30:45,999 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:30:46,001 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:30:46,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:30:46,008 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:30:46,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:30:46,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:30:46,014 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:30:46,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:30:46,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:30:46,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:30:46,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:30:46,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:30:46,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:30:46,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:30:46,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:30:46,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:30:46,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:30:46,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:30:46,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:30:46,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:30:46,044 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:30:46,044 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:30:46,048 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:30:46,049 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:30:46,050 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:30:46,050 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:30:46,051 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:30:46,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:30:46,052 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:30:46,053 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:30:46,053 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:30:46,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:30:46,055 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:30:46,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:30:46,056 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:30:46,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:30:46,057 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:30:46,083 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:30:46,083 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:30:46,084 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:30:46,084 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:30:46,085 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:30:46,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:30:46,085 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:30:46,085 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:30:46,085 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:30:46,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:30:46,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:30:46,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:30:46,086 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:30:46,086 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:30:46,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:30:46,087 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:30:46,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:30:46,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:30:46,088 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:30:46,088 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:30:46,088 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:30:46,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:30:46,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:30:46,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:30:46,089 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:30:46,089 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:30:46,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:30:46,089 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:30:46,089 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:30:46,090 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:30:46,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:30:46,550 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:30:46,557 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:30:46,559 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:30:46,559 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:30:46,560 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c [2020-09-25 14:30:46,647 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6fb2f5835/ad086e1536444f26a49e3c5aab965239/FLAG346e4f159 [2020-09-25 14:30:47,177 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:30:47,178 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c [2020-09-25 14:30:47,187 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6fb2f5835/ad086e1536444f26a49e3c5aab965239/FLAG346e4f159 [2020-09-25 14:30:47,528 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6fb2f5835/ad086e1536444f26a49e3c5aab965239 [2020-09-25 14:30:47,541 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:30:47,547 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:30:47,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:30:47,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:30:47,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:30:47,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:30:47" (1/1) ... [2020-09-25 14:30:47,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cc40f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:47, skipping insertion in model container [2020-09-25 14:30:47,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:30:47" (1/1) ... [2020-09-25 14:30:47,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:30:47,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:30:47,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:30:47,802 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:30:47,824 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:30:47,841 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:30:47,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:47 WrapperNode [2020-09-25 14:30:47,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:30:47,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:30:47,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:30:47,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:30:47,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:47" (1/1) ... [2020-09-25 14:30:47,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:47" (1/1) ... [2020-09-25 14:30:47,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:47" (1/1) ... [2020-09-25 14:30:47,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:47" (1/1) ... [2020-09-25 14:30:47,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:47" (1/1) ... [2020-09-25 14:30:47,960 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:47" (1/1) ... [2020-09-25 14:30:47,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:47" (1/1) ... [2020-09-25 14:30:47,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:30:47,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:30:47,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:30:47,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:30:47,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:30:48,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:30:48,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:30:48,043 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 14:30:48,043 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 14:30:48,043 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:30:48,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:30:48,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:30:48,043 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 14:30:48,043 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 14:30:48,044 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:30:48,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:30:48,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:30:48,277 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:30:48,277 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 14:30:48,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:30:48 BoogieIcfgContainer [2020-09-25 14:30:48,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:30:48,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:30:48,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:30:48,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:30:48,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:30:47" (1/3) ... [2020-09-25 14:30:48,290 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 02:30:48, skipping insertion in model container [2020-09-25 14:30:48,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:47" (2/3) ... [2020-09-25 14:30:48,291 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 02:30:48, skipping insertion in model container [2020-09-25 14:30:48,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:30:48" (3/3) ... [2020-09-25 14:30:48,293 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-1.c [2020-09-25 14:30:48,306 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:30:48,317 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:30:48,360 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:30:48,406 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:30:48,406 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:30:48,407 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:30:48,407 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:30:48,407 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:30:48,407 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:30:48,408 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:30:48,408 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:30:48,434 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 14:30:48,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 14:30:48,441 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:48,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:30:48,443 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:48,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:48,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 14:30:48,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:48,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145520547] [2020-09-25 14:30:48,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:48,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:48,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:48,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:30:48,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:48,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 14:30:48,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:48,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:48,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:30:48,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:30:48,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:30:48,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 14:30:48,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:30:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:48,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:48,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:48,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:30:48,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:48,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:30:48,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:48,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:48,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:48,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:48,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:48,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:48,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:30:48,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:48,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:48,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:48,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:48,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:48,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 14:30:48,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:48,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:48,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:30:48,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:30:48,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:30:48,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:48,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:30:48,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145520547] [2020-09-25 14:30:48,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:30:48,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:30:48,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576772501] [2020-09-25 14:30:48,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:30:48,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:30:48,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:30:48,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:30:48,796 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 14:30:48,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:30:48,934 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 14:30:48,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:30:48,937 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 14:30:48,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:30:48,951 INFO L225 Difference]: With dead ends: 58 [2020-09-25 14:30:48,951 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 14:30:48,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:30:48,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 14:30:49,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 14:30:49,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 14:30:49,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 14:30:49,014 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 14:30:49,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:30:49,015 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 14:30:49,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:30:49,015 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 14:30:49,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 14:30:49,018 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:49,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:30:49,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:30:49,018 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:49,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:49,019 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 14:30:49,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:49,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925960566] [2020-09-25 14:30:49,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:49,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:49,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:49,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:49,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 14:30:49,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:49,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 14:30:49,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:49,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:49,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:30:49,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:30:49,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:30:49,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:49,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:30:49,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:49,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:49,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:49,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:30:49,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:49,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:30:49,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:49,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:49,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:49,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:49,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:49,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:49,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:30:49,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:49,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:49,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:49,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:30:49,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:49,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 14:30:49,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:49,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:49,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:30:49,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:30:49,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:30:49,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:49,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:30:49,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925960566] [2020-09-25 14:30:49,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:30:49,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:30:49,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311675116] [2020-09-25 14:30:49,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:30:49,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:30:49,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:30:49,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:30:49,224 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 14:30:49,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:30:49,322 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 14:30:49,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:30:49,323 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 14:30:49,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:30:49,325 INFO L225 Difference]: With dead ends: 50 [2020-09-25 14:30:49,325 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 14:30:49,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:30:49,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 14:30:49,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 14:30:49,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 14:30:49,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 14:30:49,337 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 14:30:49,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:30:49,337 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 14:30:49,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:30:49,337 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 14:30:49,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 14:30:49,339 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:49,340 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 14:30:49,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:30:49,340 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:49,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:49,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 14:30:49,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:49,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612671946] [2020-09-25 14:30:49,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:49,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:49,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:49,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:49,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:49,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 14:30:49,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:30:49,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 614 [2020-09-25 14:30:49,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:49,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:49,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:49,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:30:49,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 14:30:49,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:30:49,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:30:49,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:50,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:50,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:50,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:30:50,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:50,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:30:50,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:50,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:50,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:50,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:50,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:50,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:50,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:30:50,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:50,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:50,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:50,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:50,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:50,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:30:50,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:30:50,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-09-25 14:30:50,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:50,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:50,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:50,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:30:50,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:30:50,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:50,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:50,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:50,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:50,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:50,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:50,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:30:50,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:50,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:50,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:30:50,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:50,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:30:50,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:50,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:30:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:50,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:50,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:50,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:50,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:50,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:30:50,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:50,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:50,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:30:50,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:50,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:30:50,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:50,397 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 14:30:50,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612671946] [2020-09-25 14:30:50,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:30:50,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:30:50,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227192970] [2020-09-25 14:30:50,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:30:50,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:30:50,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:30:50,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:30:50,408 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 14:30:50,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:30:50,574 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 14:30:50,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:30:50,576 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 14:30:50,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:30:50,578 INFO L225 Difference]: With dead ends: 58 [2020-09-25 14:30:50,579 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 14:30:50,582 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 14:30:50,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 14:30:50,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 14:30:50,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 14:30:50,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 14:30:50,604 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 14:30:50,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:30:50,605 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 14:30:50,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:30:50,605 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 14:30:50,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 14:30:50,610 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:50,610 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 14:30:50,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:30:50,611 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:50,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:50,612 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 14:30:50,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:50,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774165315] [2020-09-25 14:30:50,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:50,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:50,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:50,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:50,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:51,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:51,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 14:30:51,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:30:51,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 560 [2020-09-25 14:30:51,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:51,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:51,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:51,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:30:51,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:30:51,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:51,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:30:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:51,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:51,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:51,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:30:51,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:51,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:30:51,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:51,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:51,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:51,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:51,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:51,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:51,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:30:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:51,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:51,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:51,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:51,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:30:51,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:30:51,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 14:30:51,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:51,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:51,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:51,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 14:30:51,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:30:51,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:51,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:51,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:51,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:51,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:30:51,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:51,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:30:51,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:51,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:51,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:30:51,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:51,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:30:51,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:51,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:30:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:51,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:51,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:51,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:51,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:30:51,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:30:51,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 14:30:51,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:51,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:51,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:30:51,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:30:51,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:30:51,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:51,451 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 14:30:51,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774165315] [2020-09-25 14:30:51,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:30:51,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:30:51,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970706808] [2020-09-25 14:30:51,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:30:51,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:30:51,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:30:51,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:30:51,454 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 14:30:51,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:30:51,595 INFO L93 Difference]: Finished difference Result 107 states and 141 transitions. [2020-09-25 14:30:51,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:30:51,596 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 14:30:51,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:30:51,598 INFO L225 Difference]: With dead ends: 107 [2020-09-25 14:30:51,598 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 14:30:51,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:30:51,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 14:30:51,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2020-09-25 14:30:51,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 14:30:51,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-09-25 14:30:51,611 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 35 [2020-09-25 14:30:51,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:30:51,612 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-09-25 14:30:51,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:30:51,612 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-09-25 14:30:51,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 14:30:51,614 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:51,614 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 14:30:51,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:30:51,615 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:51,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:51,615 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 14:30:51,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:51,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437631748] [2020-09-25 14:30:51,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:51,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:51,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:51,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:51,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:51,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:51,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:52,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:56,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:56,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 14:30:56,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:30:56,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:30:56,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:56,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:56,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:56,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:30:56,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 14:30:56,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:56,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:30:56,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:56,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:56,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:56,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:30:56,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:56,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:30:56,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:56,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:56,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:56,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:56,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:56,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:56,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:30:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:56,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:56,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:56,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:56,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:56,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:57,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:57,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:01,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:01,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 14:31:01,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:31:01,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:31:01,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:01,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:01,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:31:01,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:31:01,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 14:31:01,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:01,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:01,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:01,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:01,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:01,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:31:01,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:31:01,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 14:31:01,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:01,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:01,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:31:01,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:01,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:31:01,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:01,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:01,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:01,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:01,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:01,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:01,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:31:01,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:01,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:01,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:01,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:01,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:01,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:01,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:31:01,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:01,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:01,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:01,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:01,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:01,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:31:01,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:01,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:01,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:01,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:01,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:01,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:01,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 14:31:01,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:01,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:01,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:01,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:31:01,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:01,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 14:31:01,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:01,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:01,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:31:01,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:01,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:31:01,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:01,838 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 14:31:01,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437631748] [2020-09-25 14:31:01,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:31:01,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:31:01,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62322187] [2020-09-25 14:31:01,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:31:01,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:31:01,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:31:01,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:31:01,842 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 7 states. [2020-09-25 14:31:02,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:31:02,012 INFO L93 Difference]: Finished difference Result 74 states and 87 transitions. [2020-09-25 14:31:02,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:31:02,013 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 14:31:02,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:31:02,015 INFO L225 Difference]: With dead ends: 74 [2020-09-25 14:31:02,015 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 14:31:02,016 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 14:31:02,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 14:31:02,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 54. [2020-09-25 14:31:02,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 14:31:02,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-09-25 14:31:02,047 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 51 [2020-09-25 14:31:02,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:31:02,049 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-09-25 14:31:02,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:31:02,052 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-09-25 14:31:02,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 14:31:02,054 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:31:02,055 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 14:31:02,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:31:02,055 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:31:02,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:31:02,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 14:31:02,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:31:02,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733010047] [2020-09-25 14:31:02,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:31:02,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:02,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:02,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:02,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:02,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:02,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:02,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:02,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:02,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:03,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:03,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:07,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:07,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 14:31:07,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 14:31:07,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 14:31:07,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:07,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:07,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:31:07,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:31:07,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 14:31:07,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:31:07,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:31:07,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:07,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:07,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:07,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:31:07,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:07,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:31:07,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:07,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:07,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:07,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:07,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:07,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:07,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:31:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:07,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:07,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:07,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:07,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:07,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:07,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:07,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:08,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:08,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:12,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:12,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 14:31:12,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:31:12,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:31:12,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:12,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:12,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:31:12,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 14:31:12,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 14:31:12,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:12,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:12,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:12,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:12,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:12,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:31:12,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:31:12,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 14:31:12,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:12,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:12,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:31:12,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:12,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 14:31:12,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:12,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:12,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:12,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:12,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:12,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:12,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:31:12,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:12,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:12,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:31:12,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:12,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:31:12,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:12,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:31:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:12,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:12,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:12,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:12,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:12,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:31:12,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:12,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:12,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:31:12,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:12,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:31:12,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:12,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 14:31:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:12,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:12,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:12,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:12,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:31:12,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:31:12,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 14:31:12,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:12,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:12,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:31:12,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:31:12,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:31:12,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:12,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:12,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:12,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:12,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:12,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:12,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:31:12,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:12,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:12,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:31:12,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:12,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:31:12,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:12,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:31:12,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:12,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:12,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:12,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:12,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:12,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:31:12,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:12,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:12,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:31:12,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:12,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:31:12,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:12,452 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 14:31:12,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733010047] [2020-09-25 14:31:12,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:31:12,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 14:31:12,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955332842] [2020-09-25 14:31:12,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:31:12,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:31:12,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:31:12,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:31:12,457 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 10 states. [2020-09-25 14:31:12,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:31:12,782 INFO L93 Difference]: Finished difference Result 134 states and 177 transitions. [2020-09-25 14:31:12,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:31:12,783 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-09-25 14:31:12,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:31:12,785 INFO L225 Difference]: With dead ends: 134 [2020-09-25 14:31:12,785 INFO L226 Difference]: Without dead ends: 86 [2020-09-25 14:31:12,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-09-25 14:31:12,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-25 14:31:12,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 80. [2020-09-25 14:31:12,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-25 14:31:12,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 100 transitions. [2020-09-25 14:31:12,799 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 100 transitions. Word has length 67 [2020-09-25 14:31:12,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:31:12,800 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 100 transitions. [2020-09-25 14:31:12,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:31:12,800 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 100 transitions. [2020-09-25 14:31:12,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 14:31:12,803 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:31:12,803 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:31:12,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:31:12,804 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:31:12,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:31:12,804 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 14:31:12,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:31:12,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345211199] [2020-09-25 14:31:12,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:31:12,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:12,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:12,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:12,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:12,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:12,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:12,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:13,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:14,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:14,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:15,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:16,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:17,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:17,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:17,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:17,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 14:31:17,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 14:31:17,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:31:17,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:17,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:17,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:31:17,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:31:17,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 14:31:17,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:17,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:31:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:17,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:17,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:17,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:31:17,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:17,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:31:17,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:17,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:17,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:17,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:17,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:17,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:17,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:31:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:17,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:17,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:17,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:17,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:17,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:18,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:19,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:20,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:20,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:22,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:22,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 14:31:22,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:31:22,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 14:31:22,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:22,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:22,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:31:22,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 14:31:22,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 14:31:22,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:22,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:22,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:22,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:22,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:23,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:23,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:31:23,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:31:23,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 398 [2020-09-25 14:31:23,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:23,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:23,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:31:23,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:23,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 14:31:23,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:23,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:23,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:23,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:23,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:23,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:31:23,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:23,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 14:31:23,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:23,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:23,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:31:23,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:23,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:31:23,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:23,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:31:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:23,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:23,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:23,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:23,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:23,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:31:23,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:23,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:23,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:31:23,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:23,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:31:23,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:23,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:31:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:23,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:23,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:23,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:23,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:23,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:31:23,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:31:23,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-09-25 14:31:23,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:23,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:23,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:31:23,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:31:23,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 14:31:23,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:23,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:23,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:23,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:23,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:23,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:31:23,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:23,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:31:23,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:23,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:23,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:31:23,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:23,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:31:23,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:23,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:31:23,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:23,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:23,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:23,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:23,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:23,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:31:23,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:23,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:23,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:31:23,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:23,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:31:23,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:23,618 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 14:31:23,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345211199] [2020-09-25 14:31:23,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:31:23,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:31:23,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076797785] [2020-09-25 14:31:23,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:31:23,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:31:23,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:31:23,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:31:23,620 INFO L87 Difference]: Start difference. First operand 80 states and 100 transitions. Second operand 8 states. [2020-09-25 14:31:23,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:31:23,816 INFO L93 Difference]: Finished difference Result 174 states and 236 transitions. [2020-09-25 14:31:23,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:31:23,816 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-09-25 14:31:23,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:31:23,819 INFO L225 Difference]: With dead ends: 174 [2020-09-25 14:31:23,819 INFO L226 Difference]: Without dead ends: 100 [2020-09-25 14:31:23,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:31:23,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-09-25 14:31:23,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-09-25 14:31:23,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-09-25 14:31:23,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 127 transitions. [2020-09-25 14:31:23,833 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 127 transitions. Word has length 69 [2020-09-25 14:31:23,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:31:23,834 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 127 transitions. [2020-09-25 14:31:23,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:31:23,834 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 127 transitions. [2020-09-25 14:31:23,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-25 14:31:23,836 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:31:23,836 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:31:23,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 14:31:23,837 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:31:23,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:31:23,837 INFO L82 PathProgramCache]: Analyzing trace with hash -659479355, now seen corresponding path program 1 times [2020-09-25 14:31:23,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:31:23,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893440512] [2020-09-25 14:31:23,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:31:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:23,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:23,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:23,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:23,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:23,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:23,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:24,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:24,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:25,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:25,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:25,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:25,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:28,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:28,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-09-25 14:31:28,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 14:31:28,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:31:28,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:28,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:28,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:31:28,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:31:28,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 14:31:28,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:28,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:31:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:28,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:28,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:28,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:31:28,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:28,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:31:28,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:28,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:28,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:28,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:28,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:28,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:28,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:31:28,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:28,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:28,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:28,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:28,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:28,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:30,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:30,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:30,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:30,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:30,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:30,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:30,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:30,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:30,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:30,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:31,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:32,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:32,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:33,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:33,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 14:31:33,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-25 14:31:33,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:31:33,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:33,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:33,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:31:33,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 14:31:33,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 14:31:33,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:33,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:33,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:33,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:33,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:33,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:34,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:34,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:34,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 14:31:34,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:31:34,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 651 [2020-09-25 14:31:34,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:34,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:34,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:31:34,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 14:31:34,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 14:31:34,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:34,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:34,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:34,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:34,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:34,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:34,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:31:34,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:31:34,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 14:31:34,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:34,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:34,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:31:34,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:34,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 14:31:34,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:34,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:34,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:34,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:34,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:34,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:34,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:31:34,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:34,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:34,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:31:34,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:34,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:31:34,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:34,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:31:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:34,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:34,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:34,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:34,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:34,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:31:34,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:34,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:34,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:31:34,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:34,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:31:34,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:34,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 14:31:34,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:34,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:34,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:34,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:34,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:34,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:31:34,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:34,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:34,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:31:34,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:31:34,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:31:34,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:34,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 14:31:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:34,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:34,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:34,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:34,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:31:34,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:31:34,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 14:31:34,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:34,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:34,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:31:34,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 14:31:34,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:31:34,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:34,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:34,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:34,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:34,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:34,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:34,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:34,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:31:34,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:34,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:34,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:31:34,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:31:34,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:31:34,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:34,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:31:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:34,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:34,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:34,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:34,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:34,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:31:34,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:34,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:34,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:34,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 14:31:34,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:34,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:34,893 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 31 proven. 17 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-25 14:31:34,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893440512] [2020-09-25 14:31:34,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:31:34,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 14:31:34,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371247730] [2020-09-25 14:31:34,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 14:31:34,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:31:34,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 14:31:34,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:31:34,896 INFO L87 Difference]: Start difference. First operand 100 states and 127 transitions. Second operand 11 states. [2020-09-25 14:31:35,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:31:35,110 INFO L93 Difference]: Finished difference Result 177 states and 239 transitions. [2020-09-25 14:31:35,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:31:35,111 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-09-25 14:31:35,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:31:35,113 INFO L225 Difference]: With dead ends: 177 [2020-09-25 14:31:35,113 INFO L226 Difference]: Without dead ends: 83 [2020-09-25 14:31:35,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-09-25 14:31:35,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-25 14:31:35,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 77. [2020-09-25 14:31:35,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-25 14:31:35,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 93 transitions. [2020-09-25 14:31:35,137 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 93 transitions. Word has length 84 [2020-09-25 14:31:35,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:31:35,137 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 93 transitions. [2020-09-25 14:31:35,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 14:31:35,138 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 93 transitions. [2020-09-25 14:31:35,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 14:31:35,139 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:31:35,139 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 14:31:35,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 14:31:35,144 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:31:35,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:31:35,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1957044445, now seen corresponding path program 1 times [2020-09-25 14:31:35,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:31:35,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152457415] [2020-09-25 14:31:35,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:31:35,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:35,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:35,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:35,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:35,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:35,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:35,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:35,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:36,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:36,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:36,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:36,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:36,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:37,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:37,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:37,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:37,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:39,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:39,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:40,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:40,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 14:31:40,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-25 14:31:40,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 14:31:40,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:40,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:40,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:31:40,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:31:40,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 14:31:40,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:40,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:31:40,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:40,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:40,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:40,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:31:40,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:40,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:31:40,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:40,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:40,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:40,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:31:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:40,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:40,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:40,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:40,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:40,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:40,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:40,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:40,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:40,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:42,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:42,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:42,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:42,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:42,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:43,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking...