/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=0.1 --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_5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:00:34,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:00:34,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:00:34,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:00:34,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:00:34,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:00:34,359 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:00:34,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:00:34,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:00:34,364 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:00:34,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:00:34,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:00:34,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:00:34,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:00:34,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:00:34,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:00:34,372 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:00:34,373 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:00:34,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:00:34,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:00:34,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:00:34,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:00:34,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:00:34,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:00:34,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:00:34,385 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:00:34,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:00:34,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:00:34,387 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:00:34,388 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:00:34,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:00:34,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:00:34,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:00:34,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:00:34,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:00:34,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:00:34,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:00:34,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:00:34,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:00:34,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:00:34,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:00:34,398 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 10:00:34,426 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:00:34,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:00:34,428 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:00:34,428 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:00:34,428 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:00:34,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:00:34,429 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:00:34,429 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:00:34,429 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:00:34,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:00:34,429 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:00:34,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:00:34,430 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:00:34,430 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:00:34,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:00:34,430 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:00:34,431 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:00:34,431 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:00:34,431 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:00:34,431 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:00:34,431 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:00:34,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:00:34,432 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:00:34,432 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:00:34,432 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:00:34,433 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:00:34,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:00:34,433 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:00:34,433 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:00:34,433 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:00:34,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:00:34,933 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:00:34,937 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:00:34,939 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:00:34,940 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:00:34,941 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_5-2.c [2020-09-25 10:00:35,036 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b14865560/d7cba113dbae48e6803b828641beecd2/FLAG9569e6d50 [2020-09-25 10:00:35,593 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:00:35,594 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_5-2.c [2020-09-25 10:00:35,604 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b14865560/d7cba113dbae48e6803b828641beecd2/FLAG9569e6d50 [2020-09-25 10:00:35,951 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b14865560/d7cba113dbae48e6803b828641beecd2 [2020-09-25 10:00:35,964 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:00:35,971 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:00:35,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:00:35,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:00:35,978 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:00:35,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:00:35" (1/1) ... [2020-09-25 10:00:35,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68e64c0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:35, skipping insertion in model container [2020-09-25 10:00:35,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:00:35" (1/1) ... [2020-09-25 10:00:35,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:00:36,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:00:36,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:00:36,337 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:00:36,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:00:36,379 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:00:36,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:36 WrapperNode [2020-09-25 10:00:36,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:00:36,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:00:36,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:00:36,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:00:36,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:36" (1/1) ... [2020-09-25 10:00:36,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:36" (1/1) ... [2020-09-25 10:00:36,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:36" (1/1) ... [2020-09-25 10:00:36,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:36" (1/1) ... [2020-09-25 10:00:36,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:36" (1/1) ... [2020-09-25 10:00:36,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:36" (1/1) ... [2020-09-25 10:00:36,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:36" (1/1) ... [2020-09-25 10:00:36,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:00:36,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:00:36,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:00:36,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:00:36,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:36" (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 10:00:36,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:00:36,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:00:36,576 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 10:00:36,576 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 10:00:36,576 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:00:36,576 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:00:36,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:00:36,577 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 10:00:36,577 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 10:00:36,577 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:00:36,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:00:36,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:00:36,831 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:00:36,832 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 10:00:36,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:00:36 BoogieIcfgContainer [2020-09-25 10:00:36,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:00:36,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:00:36,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:00:36,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:00:36,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:00:35" (1/3) ... [2020-09-25 10:00:36,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@566da70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:00:36, skipping insertion in model container [2020-09-25 10:00:36,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:36" (2/3) ... [2020-09-25 10:00:36,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@566da70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:00:36, skipping insertion in model container [2020-09-25 10:00:36,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:00:36" (3/3) ... [2020-09-25 10:00:36,851 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_5-2.c [2020-09-25 10:00:36,866 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:00:36,882 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:00:36,934 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:00:36,980 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:00:36,981 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:00:36,981 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:00:36,981 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:00:36,981 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:00:36,981 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:00:36,981 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:00:36,982 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:00:37,007 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 10:00:37,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 10:00:37,015 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:00:37,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:00:37,017 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:00:37,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:00:37,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 10:00:37,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:00:37,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160288658] [2020-09-25 10:00:37,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:00:37,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:37,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:37,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:37,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:37,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:00:37,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:00:37,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-09-25 10:00:37,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:37,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:37,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:00:37,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 10:00:37,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:00:37,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 10:00:37,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:00:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:37,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:37,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:37,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:00:37,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:37,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:00:37,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:37,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:37,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:37,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:37,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:37,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:37,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:00:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:37,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:37,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:37,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:37,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:37,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:00:37,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:37,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:37,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:00:37,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:37,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:00:37,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:37,533 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 10:00:37,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160288658] [2020-09-25 10:00:37,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:00:37,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:00:37,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378075764] [2020-09-25 10:00:37,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:00:37,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:00:37,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:00:37,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:00:37,567 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 10:00:37,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:00:37,666 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 10:00:37,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:00:37,668 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 10:00:37,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:00:37,683 INFO L225 Difference]: With dead ends: 58 [2020-09-25 10:00:37,684 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 10:00:37,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:00:37,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 10:00:37,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 10:00:37,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 10:00:37,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 10:00:37,745 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 10:00:37,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:00:37,746 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 10:00:37,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:00:37,746 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 10:00:37,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 10:00:37,749 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:00:37,749 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 10:00:37,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:00:37,750 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:00:37,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:00:37,750 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 10:00:37,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:00:37,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66142975] [2020-09-25 10:00:37,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:00:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:37,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:37,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:37,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:37,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 10:00:37,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:00:37,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-25 10:00:37,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:37,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:37,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:00:37,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:00:37,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:00:37,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:37,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:00:37,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:37,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:37,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:37,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:00:37,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:37,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:00:37,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:37,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:37,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:37,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:37,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:37,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:37,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:00:37,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:37,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:37,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:37,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:00:37,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:37,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 10:00:37,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:37,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:37,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:00:37,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:00:37,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:00:37,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:37,990 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 10:00:37,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66142975] [2020-09-25 10:00:37,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:00:37,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:00:37,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416715675] [2020-09-25 10:00:37,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:00:37,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:00:37,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:00:37,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:00:37,995 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 10:00:38,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:00:38,063 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 10:00:38,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:00:38,064 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 10:00:38,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:00:38,066 INFO L225 Difference]: With dead ends: 50 [2020-09-25 10:00:38,066 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 10:00:38,068 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 10:00:38,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 10:00:38,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 10:00:38,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 10:00:38,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 10:00:38,084 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 10:00:38,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:00:38,084 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 10:00:38,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:00:38,085 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 10:00:38,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 10:00:38,087 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:00:38,087 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 10:00:38,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:00:38,089 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:00:38,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:00:38,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 10:00:38,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:00:38,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396255209] [2020-09-25 10:00:38,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:00:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:38,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:38,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:38,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:38,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:40,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:40,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 10:00:40,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:00:40,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1978 [2020-09-25 10:00:40,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:40,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:40,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:00:40,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:00:40,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 10:00:40,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:40,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:00:40,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:40,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:40,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:40,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:00:40,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:40,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:00:40,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:40,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:40,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:40,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:40,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:40,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:00:40,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:00:40,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:40,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:40,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:40,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:40,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:40,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 10:00:40,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:00:40,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-09-25 10:00:40,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:40,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:40,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:00:40,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:00:40,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:00:40,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:40,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:40,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:40,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:40,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:40,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:40,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:40,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 10:00:40,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:40,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:40,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:40,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:40,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:00:40,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:40,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 10:00:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:40,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:40,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:40,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:40,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:40,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:00:40,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:40,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:40,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:00:40,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:40,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:00:40,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:00:40,464 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 10:00:40,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396255209] [2020-09-25 10:00:40,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:00:40,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 10:00:40,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260705141] [2020-09-25 10:00:40,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:00:40,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:00:40,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:00:40,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:00:40,476 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 10:00:40,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:00:40,669 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 10:00:40,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:00:40,671 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 10:00:40,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:00:40,675 INFO L225 Difference]: With dead ends: 58 [2020-09-25 10:00:40,675 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 10:00:40,676 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 10:00:40,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 10:00:40,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 10:00:40,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 10:00:40,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 10:00:40,698 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 10:00:40,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:00:40,698 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 10:00:40,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:00:40,699 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 10:00:40,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 10:00:40,702 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:00:40,703 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 10:00:40,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:00:40,704 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:00:40,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:00:40,704 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 10:00:40,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:00:40,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136360735] [2020-09-25 10:00:40,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:00:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:40,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:40,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:40,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:41,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:41,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:42,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:42,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 10:00:42,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:00:42,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1792 [2020-09-25 10:00:42,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:42,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:42,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:00:42,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:00:42,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 10:00:42,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:42,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:00:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:42,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:42,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:42,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:00:42,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:42,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:00:42,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:42,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:42,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:42,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:42,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:42,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:42,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:00:42,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:42,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:42,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:42,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:42,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:43,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:43,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:00:43,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:00:43,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 459 [2020-09-25 10:00:43,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:43,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:43,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:00:43,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:00:43,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 10:00:43,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:43,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:43,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:43,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:43,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:43,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:00:43,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:43,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:00:43,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:43,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:43,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:00:43,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:43,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:00:43,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:43,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:00:43,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:43,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:43,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:43,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:00:43,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:43,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 10:00:43,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:43,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:43,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:43,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:43,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:00:43,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:43,128 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 10:00:43,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136360735] [2020-09-25 10:00:43,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:00:43,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:00:43,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521233842] [2020-09-25 10:00:43,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:00:43,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:00:43,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:00:43,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:00:43,141 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 10:00:43,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:00:43,291 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2020-09-25 10:00:43,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:00:43,292 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 10:00:43,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:00:43,294 INFO L225 Difference]: With dead ends: 72 [2020-09-25 10:00:43,294 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 10:00:43,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:00:43,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 10:00:43,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 52. [2020-09-25 10:00:43,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 10:00:43,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2020-09-25 10:00:43,307 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 35 [2020-09-25 10:00:43,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:00:43,308 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2020-09-25 10:00:43,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:00:43,308 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2020-09-25 10:00:43,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 10:00:43,311 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:00:43,311 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 10:00:43,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:00:43,311 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:00:43,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:00:43,312 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 10:00:43,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:00:43,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894635909] [2020-09-25 10:00:43,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:00:43,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:43,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:43,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:43,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:43,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:43,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:43,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:43,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:46,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:48,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:48,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 10:00:48,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:00:48,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 10:00:48,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:48,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:48,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:00:48,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:00:48,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 10:00:48,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:48,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:00:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:48,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:48,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:48,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:00:48,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:48,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:00:48,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:48,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:48,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:48,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:48,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:48,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:48,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:00:48,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:48,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:48,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:48,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:48,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:48,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:48,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:49,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:51,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:51,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 10:00:51,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:00:51,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3508 [2020-09-25 10:00:51,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:51,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:51,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:00:51,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:00:51,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 10:00:51,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:51,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:51,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:51,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:51,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:51,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 10:00:51,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:00:51,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 10:00:51,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:51,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:51,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:51,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:51,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:00:51,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:51,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:51,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:51,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:52,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:52,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:52,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:00:52,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:52,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:52,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:52,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:52,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:52,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:00:52,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 10:00:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:52,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:52,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:52,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:52,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:52,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:00:52,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:52,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:52,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:52,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:52,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:52,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:52,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 10:00:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:52,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:52,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:52,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:00:52,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:52,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 10:00:52,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:52,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:52,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:00:52,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:52,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:00:52,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:52,067 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 10:00:52,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894635909] [2020-09-25 10:00:52,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:00:52,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:00:52,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689700018] [2020-09-25 10:00:52,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:00:52,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:00:52,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:00:52,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:00:52,071 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 7 states. [2020-09-25 10:00:52,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:00:52,214 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2020-09-25 10:00:52,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:00:52,214 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 10:00:52,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:00:52,216 INFO L225 Difference]: With dead ends: 64 [2020-09-25 10:00:52,216 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 10:00:52,217 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 10:00:52,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 10:00:52,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2020-09-25 10:00:52,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 10:00:52,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 10:00:52,234 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 51 [2020-09-25 10:00:52,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:00:52,234 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 10:00:52,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:00:52,235 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 10:00:52,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 10:00:52,242 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:00:52,242 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 10:00:52,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:00:52,242 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:00:52,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:00:52,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 10:00:52,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:00:52,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590747378] [2020-09-25 10:00:52,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:00:52,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:52,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:52,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:52,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:52,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:52,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:52,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:52,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:53,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:53,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:53,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:57,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:57,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 10:00:57,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 10:00:57,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 10:00:57,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:57,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:57,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:00:57,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:00:57,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 10:00:57,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:57,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:00:57,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:57,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:57,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:57,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:00:57,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:57,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:00:57,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:57,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:57,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:57,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:57,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:57,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:57,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:00:57,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:57,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:57,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:57,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:57,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:57,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:57,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:57,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:58,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:58,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:01,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:01,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:01,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:02,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:02,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 10:01:02,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 10:01:02,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 10:01:02,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:02,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:02,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:01:02,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:01:02,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 10:01:02,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:02,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:01:02,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:02,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:02,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:02,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:02,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 10:01:02,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:01:02,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 10:01:02,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:02,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:02,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:01:02,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:02,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:01:02,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:02,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:01:02,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:02,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:02,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:02,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:02,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:02,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:01:02,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:02,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:02,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:02,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:02,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:02,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:02,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 10:01:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:02,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:02,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:02,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:02,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:02,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:01:02,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:02,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:02,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:02,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:02,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:02,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:02,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 10:01:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:02,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:02,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:02,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:02,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:02,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 10:01:02,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:01:02,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-25 10:01:02,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:02,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:02,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:01:02,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:02,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 10:01:02,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:02,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:01:02,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:02,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:02,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:02,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:02,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:02,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:01:02,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:02,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:02,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:01:02,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:02,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:01:02,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:02,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 10:01:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:02,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:02,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:02,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:02,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:02,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:01:02,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:02,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:02,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:01:02,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:02,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:01:02,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:02,661 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-25 10:01:02,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590747378] [2020-09-25 10:01:02,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:01:02,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:01:02,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683391807] [2020-09-25 10:01:02,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:01:02,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:01:02,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:01:02,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:01:02,664 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 9 states. [2020-09-25 10:01:02,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:01:02,856 INFO L93 Difference]: Finished difference Result 78 states and 103 transitions. [2020-09-25 10:01:02,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 10:01:02,857 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2020-09-25 10:01:02,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:01:02,859 INFO L225 Difference]: With dead ends: 78 [2020-09-25 10:01:02,859 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 10:01:02,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:01:02,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 10:01:02,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 62. [2020-09-25 10:01:02,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 10:01:02,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 80 transitions. [2020-09-25 10:01:02,870 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 80 transitions. Word has length 67 [2020-09-25 10:01:02,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:01:02,871 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 80 transitions. [2020-09-25 10:01:02,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:01:02,871 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 80 transitions. [2020-09-25 10:01:02,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 10:01:02,873 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:02,874 INFO L422 BasicCegarLoop]: trace histogram [5, 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] [2020-09-25 10:01:02,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:01:02,874 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:02,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:02,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1208671938, now seen corresponding path program 1 times [2020-09-25 10:01:02,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:02,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986063018] [2020-09-25 10:01:02,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:02,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:02,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:02,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:03,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:03,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:03,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:03,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:04,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:04,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:04,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:04,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:04,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:07,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:07,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 10:01:07,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 10:01:07,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:01:07,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:07,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:07,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:01:07,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:01:07,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 10:01:07,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:07,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:01:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:07,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:07,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:07,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:01:07,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:07,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:01:07,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:07,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:07,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:07,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:07,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:07,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:07,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:01:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:07,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:07,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:07,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:08,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:08,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:08,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:08,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:08,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:09,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:11,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:11,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:12,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:12,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 10:01:12,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 10:01:12,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 10:01:12,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:12,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:12,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:01:12,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:01:12,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:01:12,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:12,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:01:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:12,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:12,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:12,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:12,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:13,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:13,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:01:13,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:01:13,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-09-25 10:01:13,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:13,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:13,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:01:13,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:13,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 10:01:13,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:13,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:01:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:13,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:13,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:13,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:13,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:01:13,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:01:13,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:01:13,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:13,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:13,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:01:13,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:13,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:01:13,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:13,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:01:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:13,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:13,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:13,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:01:13,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:13,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 10:01:13,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:13,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:13,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:01:13,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:13,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:01:13,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:13,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 10:01:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:13,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:13,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:13,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:13,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:13,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:01:13,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:01:13,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 10:01:13,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:13,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:13,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:01:13,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:13,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 10:01:13,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:13,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:01:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:13,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:13,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:13,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:01:13,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:13,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:01:13,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:13,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:13,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:13,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:13,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:13,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:13,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:01:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:13,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:13,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:13,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:01:13,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:13,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:01:13,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:13,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:13,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:13,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:13,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:13,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:13,546 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 9 proven. 41 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-25 10:01:13,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986063018] [2020-09-25 10:01:13,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:01:13,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:01:13,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612553208] [2020-09-25 10:01:13,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:01:13,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:01:13,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:01:13,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:01:13,548 INFO L87 Difference]: Start difference. First operand 62 states and 80 transitions. Second operand 10 states. [2020-09-25 10:01:13,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:01:13,779 INFO L93 Difference]: Finished difference Result 112 states and 173 transitions. [2020-09-25 10:01:13,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 10:01:13,779 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 71 [2020-09-25 10:01:13,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:01:13,781 INFO L225 Difference]: With dead ends: 112 [2020-09-25 10:01:13,782 INFO L226 Difference]: Without dead ends: 106 [2020-09-25 10:01:13,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:01:13,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-25 10:01:13,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 94. [2020-09-25 10:01:13,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-25 10:01:13,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 141 transitions. [2020-09-25 10:01:13,799 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 141 transitions. Word has length 71 [2020-09-25 10:01:13,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:01:13,800 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 141 transitions. [2020-09-25 10:01:13,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:01:13,800 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 141 transitions. [2020-09-25 10:01:13,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 10:01:13,802 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:13,803 INFO L422 BasicCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:01:13,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 10:01:13,803 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:13,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:13,803 INFO L82 PathProgramCache]: Analyzing trace with hash -606116705, now seen corresponding path program 1 times [2020-09-25 10:01:13,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:13,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88685023] [2020-09-25 10:01:13,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:13,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:13,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:13,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:13,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:13,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:13,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:14,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:15,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:16,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:16,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:16,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:16,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:16,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:16,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:18,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:18,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 10:01:18,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 10:01:18,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 10:01:18,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:18,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:18,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:01:18,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 10:01:18,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 10:01:18,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:18,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:01:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:18,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:18,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:18,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:01:18,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:18,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:01:18,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:18,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:18,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:18,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:18,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:18,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:18,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:01:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:18,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:18,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:18,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:18,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:19,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:19,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:19,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:19,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:20,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:23,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:23,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:23,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:23,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:23,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:23,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:23,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 10:01:23,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 10:01:23,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 10:01:23,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:23,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:23,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:01:23,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 10:01:23,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 10:01:23,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:23,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:01:23,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:23,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:23,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:23,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:24,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:24,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:24,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 10:01:24,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:01:24,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 562 [2020-09-25 10:01:24,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:24,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:24,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:01:24,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:24,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 10:01:24,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:24,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:01:24,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:24,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:24,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:24,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:01:24,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:24,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 10:01:24,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:24,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:24,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:01:24,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:24,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:01:24,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:24,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:01:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:24,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:24,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:24,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:24,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 10:01:24,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:01:24,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 10:01:24,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:24,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:24,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:01:24,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:24,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:01:24,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:24,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:01:24,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:24,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:24,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:24,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:24,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:24,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:01:24,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:24,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:24,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:24,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:24,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:24,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:24,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 10:01:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:24,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:24,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:24,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:24,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:24,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:01:24,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:24,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:24,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:24,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:24,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:24,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:24,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 10:01:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:24,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:24,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:24,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:24,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:24,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:24,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:24,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:25,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:25,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:01:25,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:01:25,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 813 [2020-09-25 10:01:25,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:25,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:25,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:01:25,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:01:25,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 10:01:25,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:25,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:01:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:25,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:25,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:25,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:01:25,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:25,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:01:25,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:25,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:25,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:01:25,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:25,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:01:25,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:25,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:01:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:25,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:25,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:25,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:01:25,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:25,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:01:25,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:25,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:25,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:01:25,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:25,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:01:25,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:25,479 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 26 proven. 27 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 10:01:25,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88685023] [2020-09-25 10:01:25,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:01:25,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:01:25,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734685940] [2020-09-25 10:01:25,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:01:25,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:01:25,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:01:25,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:01:25,482 INFO L87 Difference]: Start difference. First operand 94 states and 141 transitions. Second operand 10 states. [2020-09-25 10:01:25,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:01:26,000 INFO L93 Difference]: Finished difference Result 262 states and 490 transitions. [2020-09-25 10:01:26,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 10:01:26,001 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-09-25 10:01:26,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:01:26,006 INFO L225 Difference]: With dead ends: 262 [2020-09-25 10:01:26,006 INFO L226 Difference]: Without dead ends: 171 [2020-09-25 10:01:26,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-09-25 10:01:26,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-09-25 10:01:26,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 154. [2020-09-25 10:01:26,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-25 10:01:26,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 229 transitions. [2020-09-25 10:01:26,062 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 229 transitions. Word has length 87 [2020-09-25 10:01:26,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:01:26,065 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 229 transitions. [2020-09-25 10:01:26,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:01:26,065 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 229 transitions. [2020-09-25 10:01:26,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-09-25 10:01:26,069 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:26,069 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:01:26,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 10:01:26,069 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:26,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:26,070 INFO L82 PathProgramCache]: Analyzing trace with hash 40158617, now seen corresponding path program 2 times [2020-09-25 10:01:26,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:26,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489092565] [2020-09-25 10:01:26,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:26,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:26,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:26,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:26,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:26,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:26,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:26,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:26,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:27,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:27,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:27,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:27,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:28,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:29,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:29,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:29,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:29,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:30,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking...