/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:20:21,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:20:21,419 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:20:21,462 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:20:21,463 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:20:21,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:20:21,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:20:21,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:20:21,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:20:21,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:20:21,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:20:21,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:20:21,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:20:21,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:20:21,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:20:21,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:20:21,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:20:21,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:20:21,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:20:21,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:20:21,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:20:21,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:20:21,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:20:21,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:20:21,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:20:21,526 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:20:21,526 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:20:21,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:20:21,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:20:21,531 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:20:21,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:20:21,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:20:21,533 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:20:21,534 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:20:21,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:20:21,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:20:21,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:20:21,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:20:21,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:20:21,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:20:21,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:20:21,541 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 12:20:21,590 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:20:21,590 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:20:21,592 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:20:21,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:20:21,593 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:20:21,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:20:21,594 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:20:21,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:20:21,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:20:21,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:20:21,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:20:21,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:20:21,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:20:21,596 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:20:21,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:20:21,597 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:20:21,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:20:21,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:20:21,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:20:21,597 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:20:21,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:20:21,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:20:21,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:20:21,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:20:21,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:20:21,599 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:20:21,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:20:21,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:20:21,599 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:20:21,600 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:20:22,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:20:22,123 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:20:22,128 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:20:22,131 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:20:22,131 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:20:22,132 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-09-25 12:20:22,223 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbb82244f/c64f6f02a36a4301b638b0d5dc124616/FLAGcb883b2b3 [2020-09-25 12:20:22,926 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:20:22,927 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-09-25 12:20:22,942 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbb82244f/c64f6f02a36a4301b638b0d5dc124616/FLAGcb883b2b3 [2020-09-25 12:20:23,155 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbb82244f/c64f6f02a36a4301b638b0d5dc124616 [2020-09-25 12:20:23,169 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:20:23,176 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:20:23,177 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:20:23,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:20:23,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:20:23,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:20:23" (1/1) ... [2020-09-25 12:20:23,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32b5b388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:23, skipping insertion in model container [2020-09-25 12:20:23,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:20:23" (1/1) ... [2020-09-25 12:20:23,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:20:23,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:20:23,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:20:23,770 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:20:23,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:20:23,893 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:20:23,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:23 WrapperNode [2020-09-25 12:20:23,894 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:20:23,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:20:23,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:20:23,895 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:20:23,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:23" (1/1) ... [2020-09-25 12:20:23,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:23" (1/1) ... [2020-09-25 12:20:23,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:23" (1/1) ... [2020-09-25 12:20:23,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:23" (1/1) ... [2020-09-25 12:20:23,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:23" (1/1) ... [2020-09-25 12:20:23,959 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:23" (1/1) ... [2020-09-25 12:20:23,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:23" (1/1) ... [2020-09-25 12:20:23,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:20:23,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:20:23,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:20:23,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:20:23,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:20:24,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:20:24,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:20:24,057 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:20:24,057 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 12:20:24,057 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 12:20:24,057 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 12:20:24,058 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 12:20:24,058 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 12:20:24,058 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 12:20:24,058 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 12:20:24,058 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 12:20:24,059 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 12:20:24,059 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 12:20:24,059 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 12:20:24,059 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 12:20:24,059 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 12:20:24,060 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 12:20:24,060 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 12:20:24,060 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 12:20:24,061 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 12:20:24,061 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 12:20:24,061 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 12:20:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 12:20:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 12:20:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 12:20:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 12:20:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 12:20:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 12:20:24,063 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 12:20:24,063 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 12:20:24,063 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 12:20:24,063 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 12:20:24,063 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 12:20:24,063 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 12:20:24,064 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 12:20:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 12:20:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 12:20:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 12:20:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 12:20:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 12:20:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 12:20:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 12:20:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 12:20:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 12:20:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 12:20:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 12:20:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 12:20:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 12:20:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 12:20:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 12:20:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 12:20:24,069 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 12:20:24,069 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 12:20:24,069 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 12:20:24,069 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 12:20:24,070 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 12:20:24,070 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 12:20:24,070 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 12:20:24,070 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 12:20:24,070 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 12:20:24,070 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 12:20:24,070 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 12:20:24,071 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 12:20:24,071 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 12:20:24,071 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 12:20:24,071 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 12:20:24,072 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:20:24,073 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 12:20:24,073 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 12:20:24,073 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 12:20:24,074 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 12:20:24,076 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 12:20:24,076 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 12:20:24,076 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 12:20:24,076 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 12:20:24,077 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 12:20:24,077 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 12:20:24,077 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 12:20:24,077 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 12:20:24,078 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 12:20:24,078 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 12:20:24,078 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 12:20:24,079 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 12:20:24,079 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 12:20:24,079 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 12:20:24,079 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 12:20:24,080 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 12:20:24,080 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 12:20:24,080 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 12:20:24,080 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 12:20:24,080 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 12:20:24,080 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 12:20:24,080 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 12:20:24,081 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 12:20:24,081 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 12:20:24,081 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 12:20:24,081 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 12:20:24,081 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 12:20:24,081 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 12:20:24,082 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 12:20:24,082 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 12:20:24,082 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 12:20:24,082 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 12:20:24,082 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 12:20:24,082 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 12:20:24,082 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 12:20:24,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:20:24,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:20:24,083 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:20:24,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 12:20:24,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 12:20:24,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 12:20:24,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 12:20:24,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 12:20:24,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 12:20:24,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:20:24,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:20:24,768 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:20:24,769 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-09-25 12:20:24,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:20:24 BoogieIcfgContainer [2020-09-25 12:20:24,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:20:24,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:20:24,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:20:24,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:20:24,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:20:23" (1/3) ... [2020-09-25 12:20:24,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27beee12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:20:24, skipping insertion in model container [2020-09-25 12:20:24,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:23" (2/3) ... [2020-09-25 12:20:24,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27beee12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:20:24, skipping insertion in model container [2020-09-25 12:20:24,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:20:24" (3/3) ... [2020-09-25 12:20:24,798 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i [2020-09-25 12:20:24,811 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:20:24,823 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-09-25 12:20:24,846 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-25 12:20:24,886 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:20:24,886 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:20:24,887 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:20:24,887 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:20:24,887 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:20:24,887 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:20:24,887 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:20:24,887 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:20:24,922 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2020-09-25 12:20:24,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-25 12:20:24,942 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:24,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:20:24,945 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:24,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:24,953 INFO L82 PathProgramCache]: Analyzing trace with hash -159181327, now seen corresponding path program 1 times [2020-09-25 12:20:24,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:24,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853417086] [2020-09-25 12:20:24,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:25,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:25,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:25,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:25,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 12:20:25,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:20:25,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 644 [2020-09-25 12:20:25,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:25,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:25,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:20:25,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:20:25,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 12:20:25,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:20:25,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:25,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:25,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:25,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:25,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:25,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:25,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 12:20:25,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:25,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:25,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:25,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:25,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:25,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:25,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:20:25,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853417086] [2020-09-25 12:20:25,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:20:25,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 12:20:25,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754358855] [2020-09-25 12:20:25,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:20:25,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:25,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:20:25,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:20:25,995 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 8 states. [2020-09-25 12:20:26,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:26,475 INFO L93 Difference]: Finished difference Result 205 states and 253 transitions. [2020-09-25 12:20:26,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:20:26,478 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-09-25 12:20:26,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:26,512 INFO L225 Difference]: With dead ends: 205 [2020-09-25 12:20:26,513 INFO L226 Difference]: Without dead ends: 90 [2020-09-25 12:20:26,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:20:26,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-25 12:20:26,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 72. [2020-09-25 12:20:26,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-25 12:20:26,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2020-09-25 12:20:26,594 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 21 [2020-09-25 12:20:26,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:26,595 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2020-09-25 12:20:26,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:20:26,595 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2020-09-25 12:20:26,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 12:20:26,596 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:26,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:20:26,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:20:26,597 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:26,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:26,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1518762392, now seen corresponding path program 1 times [2020-09-25 12:20:26,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:26,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411680668] [2020-09-25 12:20:26,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:26,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:26,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:26,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 12:20:26,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:26,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-09-25 12:20:26,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:26,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:26,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:20:26,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 12:20:26,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:20:26,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:26,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:26,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:26,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:26,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:26,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:26,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:20:26,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:26,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:26,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:26,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:26,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:26,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:26,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:20:26,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411680668] [2020-09-25 12:20:26,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:20:26,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 12:20:26,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476993975] [2020-09-25 12:20:26,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:20:26,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:26,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:20:26,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:20:26,896 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand 6 states. [2020-09-25 12:20:27,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:27,117 INFO L93 Difference]: Finished difference Result 120 states and 126 transitions. [2020-09-25 12:20:27,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:20:27,118 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-09-25 12:20:27,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:27,120 INFO L225 Difference]: With dead ends: 120 [2020-09-25 12:20:27,120 INFO L226 Difference]: Without dead ends: 117 [2020-09-25 12:20:27,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:20:27,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-09-25 12:20:27,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 81. [2020-09-25 12:20:27,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 12:20:27,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-09-25 12:20:27,136 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 27 [2020-09-25 12:20:27,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:27,136 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-09-25 12:20:27,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:20:27,139 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-09-25 12:20:27,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 12:20:27,140 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:27,141 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-09-25 12:20:27,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:20:27,141 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:27,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:27,142 INFO L82 PathProgramCache]: Analyzing trace with hash 2047332937, now seen corresponding path program 1 times [2020-09-25 12:20:27,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:27,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165810409] [2020-09-25 12:20:27,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:27,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:27,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:27,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:27,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:27,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 12:20:27,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:20:27,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 567 [2020-09-25 12:20:27,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:27,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:27,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:20:27,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 12:20:27,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 12:20:27,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:27,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:27,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:27,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:27,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:27,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:27,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:20:27,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:27,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:27,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:27,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:27,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:27,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:27,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:20:27,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [165810409] [2020-09-25 12:20:27,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:20:27,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 12:20:27,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885953732] [2020-09-25 12:20:27,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:20:27,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:27,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:20:27,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:20:27,886 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 6 states. [2020-09-25 12:20:28,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:28,086 INFO L93 Difference]: Finished difference Result 136 states and 143 transitions. [2020-09-25 12:20:28,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:20:28,087 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-09-25 12:20:28,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:28,089 INFO L225 Difference]: With dead ends: 136 [2020-09-25 12:20:28,089 INFO L226 Difference]: Without dead ends: 114 [2020-09-25 12:20:28,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:20:28,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-25 12:20:28,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 86. [2020-09-25 12:20:28,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-25 12:20:28,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2020-09-25 12:20:28,101 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 36 [2020-09-25 12:20:28,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:28,101 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2020-09-25 12:20:28,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:20:28,102 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2020-09-25 12:20:28,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 12:20:28,103 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:28,103 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2020-09-25 12:20:28,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:20:28,104 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:28,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:28,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1237644091, now seen corresponding path program 1 times [2020-09-25 12:20:28,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:28,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284419949] [2020-09-25 12:20:28,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:28,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:29,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:29,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 12:20:29,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:29,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 969 [2020-09-25 12:20:29,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:29,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:29,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:20:29,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 12:20:29,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 12:20:29,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:29,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:29,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:29,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:29,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:29,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:29,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:29,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:20:29,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:29,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:29,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:29,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:29,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:29,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:20:29,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:20:29,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284419949] [2020-09-25 12:20:29,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:20:29,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 12:20:29,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397227327] [2020-09-25 12:20:29,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 12:20:29,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:29,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 12:20:29,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-09-25 12:20:29,857 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand 15 states. [2020-09-25 12:20:31,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:31,207 INFO L93 Difference]: Finished difference Result 166 states and 175 transitions. [2020-09-25 12:20:31,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 12:20:31,208 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2020-09-25 12:20:31,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:31,209 INFO L225 Difference]: With dead ends: 166 [2020-09-25 12:20:31,210 INFO L226 Difference]: Without dead ends: 163 [2020-09-25 12:20:31,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2020-09-25 12:20:31,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-09-25 12:20:31,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 106. [2020-09-25 12:20:31,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-25 12:20:31,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 112 transitions. [2020-09-25 12:20:31,223 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 112 transitions. Word has length 40 [2020-09-25 12:20:31,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:31,223 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 112 transitions. [2020-09-25 12:20:31,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 12:20:31,223 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 112 transitions. [2020-09-25 12:20:31,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 12:20:31,225 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:31,225 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:20:31,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:20:31,226 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:31,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:31,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1411163060, now seen corresponding path program 1 times [2020-09-25 12:20:31,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:31,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150747390] [2020-09-25 12:20:31,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:31,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:31,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:31,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:31,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:32,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:33,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:33,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:35,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:35,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:35,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:35,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 12:20:35,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:20:35,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4715 [2020-09-25 12:20:35,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:35,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:35,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:20:35,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:20:35,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 12:20:35,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:36,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:36,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:36,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:36,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:36,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:36,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:20:36,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:36,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:36,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:36,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:36,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:36,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:36,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:20:36,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150747390] [2020-09-25 12:20:36,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:20:36,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 12:20:36,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821580666] [2020-09-25 12:20:36,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 12:20:36,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:36,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 12:20:36,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:20:36,196 INFO L87 Difference]: Start difference. First operand 106 states and 112 transitions. Second operand 14 states. [2020-09-25 12:20:37,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:37,007 INFO L93 Difference]: Finished difference Result 155 states and 163 transitions. [2020-09-25 12:20:37,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 12:20:37,008 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-09-25 12:20:37,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:37,015 INFO L225 Difference]: With dead ends: 155 [2020-09-25 12:20:37,015 INFO L226 Difference]: Without dead ends: 153 [2020-09-25 12:20:37,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=191, Invalid=511, Unknown=0, NotChecked=0, Total=702 [2020-09-25 12:20:37,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-25 12:20:37,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 118. [2020-09-25 12:20:37,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-09-25 12:20:37,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 125 transitions. [2020-09-25 12:20:37,040 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 125 transitions. Word has length 43 [2020-09-25 12:20:37,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:37,040 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 125 transitions. [2020-09-25 12:20:37,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 12:20:37,041 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 125 transitions. [2020-09-25 12:20:37,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 12:20:37,047 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:37,051 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:20:37,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:20:37,052 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:37,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:37,053 INFO L82 PathProgramCache]: Analyzing trace with hash -261235589, now seen corresponding path program 1 times [2020-09-25 12:20:37,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:37,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617705926] [2020-09-25 12:20:37,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:37,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:37,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:37,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:38,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:38,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 12:20:38,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:20:38,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1836 [2020-09-25 12:20:38,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:38,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:38,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 12:20:38,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 12:20:38,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 12:20:38,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:39,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:39,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:39,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:39,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:39,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:39,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:39,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:20:39,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:39,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:39,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:39,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:39,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:39,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:20:39,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:20:39,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617705926] [2020-09-25 12:20:39,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:20:39,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 12:20:39,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174089451] [2020-09-25 12:20:39,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 12:20:39,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:39,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 12:20:39,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:20:39,461 INFO L87 Difference]: Start difference. First operand 118 states and 125 transitions. Second operand 14 states. [2020-09-25 12:20:40,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:40,548 INFO L93 Difference]: Finished difference Result 165 states and 174 transitions. [2020-09-25 12:20:40,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 12:20:40,549 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 47 [2020-09-25 12:20:40,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:40,550 INFO L225 Difference]: With dead ends: 165 [2020-09-25 12:20:40,551 INFO L226 Difference]: Without dead ends: 138 [2020-09-25 12:20:40,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2020-09-25 12:20:40,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-09-25 12:20:40,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 113. [2020-09-25 12:20:40,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-25 12:20:40,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 119 transitions. [2020-09-25 12:20:40,561 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 119 transitions. Word has length 47 [2020-09-25 12:20:40,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:40,562 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 119 transitions. [2020-09-25 12:20:40,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 12:20:40,562 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 119 transitions. [2020-09-25 12:20:40,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 12:20:40,563 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:40,563 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:20:40,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:20:40,564 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:40,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:40,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1215747511, now seen corresponding path program 1 times [2020-09-25 12:20:40,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:40,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864227331] [2020-09-25 12:20:40,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:40,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:41,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:41,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 12:20:41,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:41,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1240 [2020-09-25 12:20:41,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:41,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:41,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 12:20:41,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 12:20:41,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:20:41,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:42,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:42,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:42,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:42,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:42,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:42,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:42,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:20:42,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:42,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:42,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:42,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:42,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:42,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:42,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:20:42,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864227331] [2020-09-25 12:20:42,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:20:42,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 12:20:42,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126378254] [2020-09-25 12:20:42,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 12:20:42,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:42,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 12:20:42,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-09-25 12:20:42,876 INFO L87 Difference]: Start difference. First operand 113 states and 119 transitions. Second operand 19 states. [2020-09-25 12:20:44,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:44,680 INFO L93 Difference]: Finished difference Result 188 states and 198 transitions. [2020-09-25 12:20:44,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 12:20:44,681 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 47 [2020-09-25 12:20:44,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:44,682 INFO L225 Difference]: With dead ends: 188 [2020-09-25 12:20:44,682 INFO L226 Difference]: Without dead ends: 185 [2020-09-25 12:20:44,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=285, Invalid=1121, Unknown=0, NotChecked=0, Total=1406 [2020-09-25 12:20:44,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-09-25 12:20:44,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 122. [2020-09-25 12:20:44,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-25 12:20:44,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 128 transitions. [2020-09-25 12:20:44,692 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 128 transitions. Word has length 47 [2020-09-25 12:20:44,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:44,692 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 128 transitions. [2020-09-25 12:20:44,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 12:20:44,693 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 128 transitions. [2020-09-25 12:20:44,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 12:20:44,693 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:44,694 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:20:44,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 12:20:44,694 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:44,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:44,694 INFO L82 PathProgramCache]: Analyzing trace with hash 632390076, now seen corresponding path program 1 times [2020-09-25 12:20:44,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:44,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514890562] [2020-09-25 12:20:44,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:44,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:44,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:44,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:45,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:48,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:49,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:49,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:49,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 12:20:49,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:20:49,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 12:20:49,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:49,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:49,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:20:49,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 12:20:49,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 12:20:49,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:49,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:49,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:49,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:49,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:49,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:49,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:49,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:20:49,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:49,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:49,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:49,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:49,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:49,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:49,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 12:20:49,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514890562] [2020-09-25 12:20:49,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:20:49,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 12:20:49,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856667929] [2020-09-25 12:20:49,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:20:49,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:49,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:20:49,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:20:49,800 INFO L87 Difference]: Start difference. First operand 122 states and 128 transitions. Second operand 6 states. [2020-09-25 12:20:50,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:50,013 INFO L93 Difference]: Finished difference Result 150 states and 158 transitions. [2020-09-25 12:20:50,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:20:50,013 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-09-25 12:20:50,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:50,019 INFO L225 Difference]: With dead ends: 150 [2020-09-25 12:20:50,020 INFO L226 Difference]: Without dead ends: 128 [2020-09-25 12:20:50,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:20:50,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-09-25 12:20:50,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 122. [2020-09-25 12:20:50,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-25 12:20:50,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 128 transitions. [2020-09-25 12:20:50,031 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 128 transitions. Word has length 49 [2020-09-25 12:20:50,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:50,031 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 128 transitions. [2020-09-25 12:20:50,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:20:50,032 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 128 transitions. [2020-09-25 12:20:50,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 12:20:50,032 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:50,033 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] [2020-09-25 12:20:50,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 12:20:50,033 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:50,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:50,033 INFO L82 PathProgramCache]: Analyzing trace with hash -62360599, now seen corresponding path program 2 times [2020-09-25 12:20:50,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:50,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127617399] [2020-09-25 12:20:50,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:50,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:50,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:50,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 12:20:50,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:50,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-25 12:20:50,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:50,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:50,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:20:50,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 12:20:50,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 12:20:50,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:20:50,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:50,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:50,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:50,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:50,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:50,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:20:50,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:50,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:50,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:50,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:50,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:50,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:50,298 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 12:20:50,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127617399] [2020-09-25 12:20:50,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:20:50,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:20:50,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138943780] [2020-09-25 12:20:50,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:20:50,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:50,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:20:50,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:20:50,305 INFO L87 Difference]: Start difference. First operand 122 states and 128 transitions. Second operand 7 states. [2020-09-25 12:20:50,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:50,612 INFO L93 Difference]: Finished difference Result 147 states and 154 transitions. [2020-09-25 12:20:50,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 12:20:50,612 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-09-25 12:20:50,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:50,614 INFO L225 Difference]: With dead ends: 147 [2020-09-25 12:20:50,614 INFO L226 Difference]: Without dead ends: 106 [2020-09-25 12:20:50,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:20:50,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-25 12:20:50,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-09-25 12:20:50,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-25 12:20:50,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 111 transitions. [2020-09-25 12:20:50,622 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 111 transitions. Word has length 50 [2020-09-25 12:20:50,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:50,623 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 111 transitions. [2020-09-25 12:20:50,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:20:50,623 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 111 transitions. [2020-09-25 12:20:50,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 12:20:50,624 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:50,624 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:20:50,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 12:20:50,624 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:50,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:50,625 INFO L82 PathProgramCache]: Analyzing trace with hash 231328440, now seen corresponding path program 2 times [2020-09-25 12:20:50,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:50,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632287131] [2020-09-25 12:20:50,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:50,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:51,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:51,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 12:20:51,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:51,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1145 [2020-09-25 12:20:51,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:51,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:51,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 12:20:51,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 12:20:51,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 12:20:51,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:52,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:52,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:52,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:52,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:52,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:52,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:20:52,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:52,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:52,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:52,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:52,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:52,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:52,658 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:20:52,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632287131] [2020-09-25 12:20:52,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:20:52,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 12:20:52,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858684606] [2020-09-25 12:20:52,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 12:20:52,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:52,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 12:20:52,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-09-25 12:20:52,662 INFO L87 Difference]: Start difference. First operand 106 states and 111 transitions. Second operand 19 states. [2020-09-25 12:20:54,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:54,211 INFO L93 Difference]: Finished difference Result 186 states and 195 transitions. [2020-09-25 12:20:54,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 12:20:54,216 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 53 [2020-09-25 12:20:54,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:54,217 INFO L225 Difference]: With dead ends: 186 [2020-09-25 12:20:54,217 INFO L226 Difference]: Without dead ends: 183 [2020-09-25 12:20:54,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=317, Invalid=1015, Unknown=0, NotChecked=0, Total=1332 [2020-09-25 12:20:54,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-09-25 12:20:54,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 119. [2020-09-25 12:20:54,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-09-25 12:20:54,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 126 transitions. [2020-09-25 12:20:54,227 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 126 transitions. Word has length 53 [2020-09-25 12:20:54,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:54,228 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 126 transitions. [2020-09-25 12:20:54,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 12:20:54,228 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 126 transitions. [2020-09-25 12:20:54,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 12:20:54,229 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:54,229 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:20:54,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 12:20:54,229 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:54,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:54,230 INFO L82 PathProgramCache]: Analyzing trace with hash -2144912159, now seen corresponding path program 1 times [2020-09-25 12:20:54,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:54,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105123221] [2020-09-25 12:20:54,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:54,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:54,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:54,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:55,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:55,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:56,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:57,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:58,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:58,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 12:20:58,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:20:58,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4607 [2020-09-25 12:20:58,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:58,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:58,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 12:20:58,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 12:20:58,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 12:20:58,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:59,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:59,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:59,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:59,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:59,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:59,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:20:59,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:59,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:59,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:59,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:59,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:59,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:59,161 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:20:59,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105123221] [2020-09-25 12:20:59,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:20:59,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 12:20:59,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877197337] [2020-09-25 12:20:59,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 12:20:59,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:59,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 12:20:59,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-09-25 12:20:59,163 INFO L87 Difference]: Start difference. First operand 119 states and 126 transitions. Second operand 15 states. [2020-09-25 12:21:00,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:00,175 INFO L93 Difference]: Finished difference Result 188 states and 198 transitions. [2020-09-25 12:21:00,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 12:21:00,176 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-25 12:21:00,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:00,177 INFO L225 Difference]: With dead ends: 188 [2020-09-25 12:21:00,177 INFO L226 Difference]: Without dead ends: 166 [2020-09-25 12:21:00,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=159, Invalid=711, Unknown=0, NotChecked=0, Total=870 [2020-09-25 12:21:00,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-25 12:21:00,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 135. [2020-09-25 12:21:00,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-09-25 12:21:00,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 142 transitions. [2020-09-25 12:21:00,185 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 142 transitions. Word has length 56 [2020-09-25 12:21:00,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:00,186 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 142 transitions. [2020-09-25 12:21:00,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 12:21:00,186 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 142 transitions. [2020-09-25 12:21:00,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 12:21:00,187 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:00,187 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:21:00,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 12:21:00,187 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:00,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:00,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1025074422, now seen corresponding path program 1 times [2020-09-25 12:21:00,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:00,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931173534] [2020-09-25 12:21:00,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:00,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:02,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:02,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 12:21:02,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:02,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1842 [2020-09-25 12:21:02,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:02,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:02,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 12:21:02,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 12:21:02,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 12:21:02,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:02,745 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2020-09-25 12:21:03,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:03,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:03,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:03,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:21:03,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:03,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:21:03,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:03,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:03,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:03,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:03,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:03,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:03,149 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:21:03,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931173534] [2020-09-25 12:21:03,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:03,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 12:21:03,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142770057] [2020-09-25 12:21:03,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 12:21:03,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:03,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 12:21:03,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2020-09-25 12:21:03,152 INFO L87 Difference]: Start difference. First operand 135 states and 142 transitions. Second operand 25 states. [2020-09-25 12:21:03,764 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2020-09-25 12:21:06,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:06,202 INFO L93 Difference]: Finished difference Result 163 states and 173 transitions. [2020-09-25 12:21:06,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-25 12:21:06,202 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 60 [2020-09-25 12:21:06,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:06,203 INFO L225 Difference]: With dead ends: 163 [2020-09-25 12:21:06,204 INFO L226 Difference]: Without dead ends: 160 [2020-09-25 12:21:06,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=640, Invalid=2116, Unknown=0, NotChecked=0, Total=2756 [2020-09-25 12:21:06,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-09-25 12:21:06,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 103. [2020-09-25 12:21:06,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-25 12:21:06,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 108 transitions. [2020-09-25 12:21:06,213 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 108 transitions. Word has length 60 [2020-09-25 12:21:06,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:06,213 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 108 transitions. [2020-09-25 12:21:06,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-25 12:21:06,213 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 108 transitions. [2020-09-25 12:21:06,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 12:21:06,214 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:06,214 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:21:06,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 12:21:06,214 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:06,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:06,215 INFO L82 PathProgramCache]: Analyzing trace with hash -412836324, now seen corresponding path program 2 times [2020-09-25 12:21:06,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:06,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439823382] [2020-09-25 12:21:06,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:06,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:06,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:06,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:07,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:07,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:08,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:08,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:09,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking...