/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/list-ext3-properties/dll_nullified-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:20:38,923 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:20:38,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:20:38,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:20:38,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:20:38,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:20:38,957 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:20:38,959 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:20:38,961 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:20:38,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:20:38,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:20:38,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:20:38,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:20:38,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:20:38,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:20:38,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:20:38,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:20:38,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:20:38,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:20:38,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:20:38,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:20:38,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:20:38,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:20:38,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:20:38,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:20:38,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:20:38,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:20:38,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:20:38,996 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:20:38,997 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:20:38,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:20:39,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:20:39,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:20:39,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:20:39,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:20:39,005 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:20:39,006 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:20:39,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:20:39,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:20:39,008 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:20:39,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:20:39,011 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 12:20:39,063 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:20:39,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:20:39,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:20:39,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:20:39,066 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:20:39,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:20:39,067 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:20:39,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:20:39,068 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:20:39,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:20:39,069 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:20:39,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:20:39,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:20:39,070 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:20:39,070 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:20:39,071 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:20:39,071 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:20:39,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:20:39,071 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:20:39,071 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:20:39,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:20:39,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:20:39,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:20:39,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:20:39,073 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:20:39,073 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:20:39,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:20:39,073 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:20:39,074 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:20:39,074 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 12:20:39,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:20:39,579 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:20:39,585 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:20:39,587 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:20:39,588 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:20:39,589 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2020-09-25 12:20:39,681 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7cb2df801/961bf11f85f04e3198008ce529e5179e/FLAGb6e1a5fff [2020-09-25 12:20:40,307 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:20:40,308 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2020-09-25 12:20:40,323 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7cb2df801/961bf11f85f04e3198008ce529e5179e/FLAGb6e1a5fff [2020-09-25 12:20:40,592 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7cb2df801/961bf11f85f04e3198008ce529e5179e [2020-09-25 12:20:40,607 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:20:40,614 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:20:40,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:20:40,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:20:40,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:20:40,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:20:40" (1/1) ... [2020-09-25 12:20:40,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cc58bc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:40, skipping insertion in model container [2020-09-25 12:20:40,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:20:40" (1/1) ... [2020-09-25 12:20:40,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:20:40,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:20:41,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:20:41,196 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:20:41,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:20:41,311 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:20:41,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:41 WrapperNode [2020-09-25 12:20:41,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:20:41,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:20:41,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:20:41,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:20:41,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:41" (1/1) ... [2020-09-25 12:20:41,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:41" (1/1) ... [2020-09-25 12:20:41,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:41" (1/1) ... [2020-09-25 12:20:41,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:41" (1/1) ... [2020-09-25 12:20:41,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:41" (1/1) ... [2020-09-25 12:20:41,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:41" (1/1) ... [2020-09-25 12:20:41,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:41" (1/1) ... [2020-09-25 12:20:41,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:20:41,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:20:41,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:20:41,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:20:41,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:41" (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 12:20:41,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:20:41,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:20:41,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 12:20:41,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 12:20:41,470 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 12:20:41,470 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-09-25 12:20:41,470 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:20:41,470 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:20:41,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:20:41,471 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 12:20:41,471 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 12:20:41,471 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 12:20:41,471 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 12:20:41,472 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 12:20:41,472 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 12:20:41,472 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 12:20:41,472 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 12:20:41,472 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 12:20:41,473 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 12:20:41,473 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 12:20:41,473 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 12:20:41,473 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 12:20:41,473 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 12:20:41,474 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 12:20:41,474 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 12:20:41,474 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 12:20:41,474 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 12:20:41,474 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 12:20:41,474 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 12:20:41,475 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 12:20:41,475 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 12:20:41,475 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 12:20:41,475 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 12:20:41,475 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 12:20:41,475 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 12:20:41,476 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 12:20:41,476 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 12:20:41,476 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 12:20:41,476 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 12:20:41,476 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 12:20:41,476 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 12:20:41,477 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 12:20:41,477 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 12:20:41,477 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 12:20:41,477 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 12:20:41,477 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 12:20:41,477 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 12:20:41,478 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 12:20:41,478 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 12:20:41,478 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 12:20:41,478 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 12:20:41,478 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 12:20:41,478 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 12:20:41,479 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 12:20:41,479 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 12:20:41,479 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 12:20:41,479 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 12:20:41,479 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 12:20:41,479 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 12:20:41,480 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 12:20:41,480 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 12:20:41,480 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 12:20:41,480 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 12:20:41,480 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 12:20:41,480 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 12:20:41,481 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 12:20:41,481 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 12:20:41,481 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 12:20:41,481 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 12:20:41,481 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 12:20:41,481 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 12:20:41,482 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 12:20:41,482 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 12:20:41,482 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 12:20:41,482 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:20:41,482 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 12:20:41,482 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 12:20:41,483 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 12:20:41,483 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 12:20:41,483 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 12:20:41,483 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 12:20:41,483 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 12:20:41,483 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 12:20:41,484 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 12:20:41,484 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 12:20:41,484 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 12:20:41,484 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 12:20:41,484 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 12:20:41,484 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 12:20:41,484 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 12:20:41,485 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 12:20:41,485 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 12:20:41,485 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 12:20:41,485 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 12:20:41,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 12:20:41,485 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 12:20:41,486 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 12:20:41,486 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 12:20:41,486 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 12:20:41,486 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 12:20:41,486 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 12:20:41,486 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 12:20:41,487 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 12:20:41,487 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 12:20:41,487 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 12:20:41,487 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 12:20:41,487 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 12:20:41,487 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 12:20:41,487 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 12:20:41,488 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 12:20:41,488 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 12:20:41,488 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 12:20:41,488 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 12:20:41,488 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 12:20:41,488 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 12:20:41,488 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-09-25 12:20:41,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 12:20:41,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 12:20:41,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 12:20:41,489 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:20:41,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 12:20:41,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 12:20:41,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 12:20:41,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:20:41,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:20:41,815 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 12:20:42,114 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:20:42,114 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 12:20:42,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:20:42 BoogieIcfgContainer [2020-09-25 12:20:42,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:20:42,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:20:42,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:20:42,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:20:42,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:20:40" (1/3) ... [2020-09-25 12:20:42,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa43c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:20:42, skipping insertion in model container [2020-09-25 12:20:42,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:41" (2/3) ... [2020-09-25 12:20:42,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa43c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:20:42, skipping insertion in model container [2020-09-25 12:20:42,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:20:42" (3/3) ... [2020-09-25 12:20:42,133 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_nullified-1.i [2020-09-25 12:20:42,144 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:20:42,155 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:20:42,176 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:20:42,203 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:20:42,204 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:20:42,204 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:20:42,204 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:20:42,204 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:20:42,204 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:20:42,204 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:20:42,205 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:20:42,232 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2020-09-25 12:20:42,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 12:20:42,244 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:42,245 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] [2020-09-25 12:20:42,246 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:42,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:42,253 INFO L82 PathProgramCache]: Analyzing trace with hash 136898680, now seen corresponding path program 1 times [2020-09-25 12:20:42,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:42,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485914250] [2020-09-25 12:20:42,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:42,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:42,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:42,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 12:20:42,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:42,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-25 12:20:42,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:42,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:42,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:42,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 12:20:42,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:42,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:20:42,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:42,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:42,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:42,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:42,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:42,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 12:20:42,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:42,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:42,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:42,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:42,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:42,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:42,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 12:20:42,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:42,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:42,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:42,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:20:42,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:42,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 12:20:42,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:42,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:42,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:42,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 12:20:42,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:42,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:42,738 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 12:20:42,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485914250] [2020-09-25 12:20:42,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:20:42,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:20:42,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014644357] [2020-09-25 12:20:42,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:20:42,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:42,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:20:42,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:20:42,768 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 4 states. [2020-09-25 12:20:43,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:43,127 INFO L93 Difference]: Finished difference Result 230 states and 265 transitions. [2020-09-25 12:20:43,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 12:20:43,129 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-09-25 12:20:43,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:43,145 INFO L225 Difference]: With dead ends: 230 [2020-09-25 12:20:43,146 INFO L226 Difference]: Without dead ends: 153 [2020-09-25 12:20:43,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:20:43,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-25 12:20:43,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 92. [2020-09-25 12:20:43,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-25 12:20:43,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2020-09-25 12:20:43,213 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 32 [2020-09-25 12:20:43,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:43,214 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2020-09-25 12:20:43,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:20:43,214 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2020-09-25 12:20:43,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 12:20:43,216 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:43,216 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] [2020-09-25 12:20:43,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:20:43,217 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:43,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:43,218 INFO L82 PathProgramCache]: Analyzing trace with hash 272796752, now seen corresponding path program 1 times [2020-09-25 12:20:43,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:43,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867334658] [2020-09-25 12:20:43,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:43,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:43,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:43,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 12:20:43,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:43,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-25 12:20:43,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:43,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:43,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:20:43,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:20:43,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:20:43,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:43,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:43,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:43,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:43,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:43,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:43,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:43,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:20:43,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:43,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:43,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:43,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:43,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:43,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:20:43,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 12:20:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:43,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:43,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:43,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:20:43,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:43,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 12:20:43,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:43,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:43,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:20:43,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:20:43,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:20:43,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 12:20:43,692 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 12:20:43,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867334658] [2020-09-25 12:20:43,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:20:43,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:20:43,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625919562] [2020-09-25 12:20:43,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:20:43,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:43,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:20:43,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:20:43,699 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand 7 states. [2020-09-25 12:20:44,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:44,115 INFO L93 Difference]: Finished difference Result 172 states and 190 transitions. [2020-09-25 12:20:44,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 12:20:44,115 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-09-25 12:20:44,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:44,117 INFO L225 Difference]: With dead ends: 172 [2020-09-25 12:20:44,118 INFO L226 Difference]: Without dead ends: 112 [2020-09-25 12:20:44,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:20:44,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-25 12:20:44,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 93. [2020-09-25 12:20:44,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-25 12:20:44,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2020-09-25 12:20:44,145 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 32 [2020-09-25 12:20:44,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:44,146 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2020-09-25 12:20:44,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:20:44,147 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2020-09-25 12:20:44,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 12:20:44,149 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:44,150 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:20:44,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:20:44,152 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:44,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:44,153 INFO L82 PathProgramCache]: Analyzing trace with hash -54471897, now seen corresponding path program 1 times [2020-09-25 12:20:44,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:44,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397238454] [2020-09-25 12:20:44,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:44,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:44,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:44,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:44,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:44,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:45,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:46,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:49,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:49,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 12:20:49,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:20:49,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 12:20:49,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:49,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:49,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:20:49,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:20:49,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 12:20:49,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:20:49,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:49,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:49,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:49,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:49,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:49,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:20:49,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:49,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:49,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:49,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:49,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:49,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:49,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 12:20:49,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:49,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:49,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:49,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 12:20:49,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:49,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-25 12:20:49,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:49,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:49,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:20:49,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:20:49,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 12:20:49,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:49,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:20:49,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397238454] [2020-09-25 12:20:49,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:20:49,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:20:49,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438411404] [2020-09-25 12:20:49,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:20:49,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:49,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:20:49,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:20:49,556 INFO L87 Difference]: Start difference. First operand 93 states and 102 transitions. Second operand 9 states. [2020-09-25 12:20:49,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:49,909 INFO L93 Difference]: Finished difference Result 193 states and 213 transitions. [2020-09-25 12:20:49,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:20:49,910 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-09-25 12:20:49,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:49,912 INFO L225 Difference]: With dead ends: 193 [2020-09-25 12:20:49,912 INFO L226 Difference]: Without dead ends: 133 [2020-09-25 12:20:49,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-09-25 12:20:49,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-09-25 12:20:49,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 114. [2020-09-25 12:20:49,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-25 12:20:49,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 125 transitions. [2020-09-25 12:20:49,925 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 125 transitions. Word has length 51 [2020-09-25 12:20:49,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:49,925 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 125 transitions. [2020-09-25 12:20:49,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:20:49,925 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 125 transitions. [2020-09-25 12:20:49,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 12:20:49,928 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:49,928 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:20:49,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:20:49,929 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:49,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:49,930 INFO L82 PathProgramCache]: Analyzing trace with hash -586426640, now seen corresponding path program 2 times [2020-09-25 12:20:49,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:49,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978177943] [2020-09-25 12:20:49,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:49,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:50,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:50,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:50,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:50,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:51,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:54,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:54,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 12:20:54,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:20:54,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 12:20:54,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:54,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:54,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:20:54,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 12:20:54,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 12:20:54,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:20:55,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:55,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:55,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:55,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:55,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:55,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:55,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:20:55,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:55,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:55,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:55,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:55,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:55,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:20:55,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 12:20:55,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:55,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:55,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:55,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:55,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 12:20:55,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:20:55,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-09-25 12:20:55,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:55,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:55,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:20:55,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 12:20:55,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 12:20:55,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:20:55,518 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:20:55,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978177943] [2020-09-25 12:20:55,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:20:55,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 12:20:55,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434967486] [2020-09-25 12:20:55,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:20:55,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:55,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:20:55,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:20:55,521 INFO L87 Difference]: Start difference. First operand 114 states and 125 transitions. Second operand 6 states. [2020-09-25 12:20:55,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:55,893 INFO L93 Difference]: Finished difference Result 196 states and 216 transitions. [2020-09-25 12:20:55,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:20:55,894 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-09-25 12:20:55,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:55,896 INFO L225 Difference]: With dead ends: 196 [2020-09-25 12:20:55,896 INFO L226 Difference]: Without dead ends: 115 [2020-09-25 12:20:55,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 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 12:20:55,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-25 12:20:55,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 114. [2020-09-25 12:20:55,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-25 12:20:55,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 124 transitions. [2020-09-25 12:20:55,907 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 124 transitions. Word has length 70 [2020-09-25 12:20:55,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:55,908 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 124 transitions. [2020-09-25 12:20:55,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:20:55,908 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 124 transitions. [2020-09-25 12:20:55,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 12:20:55,910 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:55,911 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:20:55,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:20:55,911 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:55,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:55,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1356086606, now seen corresponding path program 1 times [2020-09-25 12:20:55,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:55,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242229084] [2020-09-25 12:20:55,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:55,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:55,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:56,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:00,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:00,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:00,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 12:21:00,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:21:00,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 12:21:00,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:00,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:00,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:21:00,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:21:00,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 12:21:00,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:01,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:01,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:01,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:01,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:21:01,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:01,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:21:01,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:01,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:01,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:01,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:01,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:01,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:21:01,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 12:21:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:01,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:01,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:01,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 12:21:01,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:01,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-09-25 12:21:01,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:01,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:01,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:21:01,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:21:01,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 12:21:01,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:01,564 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:21:01,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242229084] [2020-09-25 12:21:01,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:01,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 12:21:01,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534640513] [2020-09-25 12:21:01,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 12:21:01,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:01,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 12:21:01,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:21:01,568 INFO L87 Difference]: Start difference. First operand 114 states and 124 transitions. Second operand 11 states. [2020-09-25 12:21:01,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:01,959 INFO L93 Difference]: Finished difference Result 214 states and 233 transitions. [2020-09-25 12:21:01,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 12:21:01,959 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-09-25 12:21:01,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:01,961 INFO L225 Difference]: With dead ends: 214 [2020-09-25 12:21:01,961 INFO L226 Difference]: Without dead ends: 154 [2020-09-25 12:21:01,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-09-25 12:21:01,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-25 12:21:01,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 135. [2020-09-25 12:21:01,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-09-25 12:21:01,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 146 transitions. [2020-09-25 12:21:01,971 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 146 transitions. Word has length 71 [2020-09-25 12:21:01,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:01,972 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 146 transitions. [2020-09-25 12:21:01,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 12:21:01,972 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 146 transitions. [2020-09-25 12:21:01,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-25 12:21:01,975 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:01,975 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:21:01,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:21:01,976 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:01,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:01,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1395228995, now seen corresponding path program 2 times [2020-09-25 12:21:01,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:01,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006816467] [2020-09-25 12:21:01,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:02,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:02,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:03,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:05,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:07,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:07,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 12:21:07,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:21:07,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:21:07,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:07,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:07,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:21:07,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:21:07,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 12:21:07,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:07,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:07,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:07,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:07,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:07,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:21:07,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:07,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:21:07,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:07,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:07,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:07,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:07,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:07,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:07,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 12:21:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:07,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:07,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:07,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 12:21:07,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:07,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 612 [2020-09-25 12:21:07,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:07,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:07,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:21:07,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:21:07,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 12:21:07,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:07,933 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:21:07,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006816467] [2020-09-25 12:21:07,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:07,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 12:21:07,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34741965] [2020-09-25 12:21:07,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 12:21:07,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:07,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 12:21:07,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:21:07,935 INFO L87 Difference]: Start difference. First operand 135 states and 146 transitions. Second operand 13 states. [2020-09-25 12:21:08,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:08,410 INFO L93 Difference]: Finished difference Result 235 states and 255 transitions. [2020-09-25 12:21:08,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 12:21:08,410 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 91 [2020-09-25 12:21:08,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:08,412 INFO L225 Difference]: With dead ends: 235 [2020-09-25 12:21:08,412 INFO L226 Difference]: Without dead ends: 175 [2020-09-25 12:21:08,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2020-09-25 12:21:08,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-09-25 12:21:08,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 156. [2020-09-25 12:21:08,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-09-25 12:21:08,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 168 transitions. [2020-09-25 12:21:08,422 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 168 transitions. Word has length 91 [2020-09-25 12:21:08,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:08,423 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 168 transitions. [2020-09-25 12:21:08,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 12:21:08,423 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 168 transitions. [2020-09-25 12:21:08,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-09-25 12:21:08,424 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:08,425 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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 12:21:08,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:21:08,425 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:08,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:08,426 INFO L82 PathProgramCache]: Analyzing trace with hash 274581320, now seen corresponding path program 3 times [2020-09-25 12:21:08,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:08,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065676431] [2020-09-25 12:21:08,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:08,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:09,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:10,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:12,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:13,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:13,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 12:21:13,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:21:13,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 12:21:13,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:13,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:13,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:21:13,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:21:13,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 12:21:13,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:21:13,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:13,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:13,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:13,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:21:13,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:13,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:21:13,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:13,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:13,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:13,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:13,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:13,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:21:13,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 12:21:13,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:13,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:14,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:14,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 12:21:14,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:14,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 882 [2020-09-25 12:21:14,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:14,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:14,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:21:14,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:21:14,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 12:21:14,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:21:14,680 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:21:14,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065676431] [2020-09-25 12:21:14,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:14,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 12:21:14,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213912662] [2020-09-25 12:21:14,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 12:21:14,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:14,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 12:21:14,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-09-25 12:21:14,685 INFO L87 Difference]: Start difference. First operand 156 states and 168 transitions. Second operand 15 states. [2020-09-25 12:21:15,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:15,234 INFO L93 Difference]: Finished difference Result 256 states and 277 transitions. [2020-09-25 12:21:15,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 12:21:15,234 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 111 [2020-09-25 12:21:15,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:15,238 INFO L225 Difference]: With dead ends: 256 [2020-09-25 12:21:15,238 INFO L226 Difference]: Without dead ends: 196 [2020-09-25 12:21:15,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-09-25 12:21:15,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-09-25 12:21:15,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 177. [2020-09-25 12:21:15,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-09-25 12:21:15,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 190 transitions. [2020-09-25 12:21:15,256 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 190 transitions. Word has length 111 [2020-09-25 12:21:15,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:15,256 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 190 transitions. [2020-09-25 12:21:15,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 12:21:15,256 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 190 transitions. [2020-09-25 12:21:15,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-25 12:21:15,262 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:15,262 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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 12:21:15,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 12:21:15,262 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:15,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:15,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1182686291, now seen corresponding path program 4 times [2020-09-25 12:21:15,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:15,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111259126] [2020-09-25 12:21:15,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:15,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:15,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:17,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:17,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:17,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:17,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 12:21:17,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:21:17,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2675 [2020-09-25 12:21:17,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:17,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:17,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 12:21:17,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 12:21:17,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 12:21:17,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:18,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:18,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:18,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:18,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:21:18,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:18,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:21:18,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:18,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:18,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:18,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:18,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:18,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:18,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 12:21:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:18,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:19,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:19,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 12:21:19,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:19,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1672 [2020-09-25 12:21:19,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:19,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:19,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 12:21:19,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:19,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 12:21:19,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:21:20,185 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 118 proven. 19 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 12:21:20,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111259126] [2020-09-25 12:21:20,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:20,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 12:21:20,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411511819] [2020-09-25 12:21:20,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 12:21:20,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:20,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 12:21:20,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-09-25 12:21:20,189 INFO L87 Difference]: Start difference. First operand 177 states and 190 transitions. Second operand 17 states. [2020-09-25 12:21:21,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:21,220 INFO L93 Difference]: Finished difference Result 308 states and 334 transitions. [2020-09-25 12:21:21,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 12:21:21,220 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 131 [2020-09-25 12:21:21,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:21,222 INFO L225 Difference]: With dead ends: 308 [2020-09-25 12:21:21,223 INFO L226 Difference]: Without dead ends: 253 [2020-09-25 12:21:21,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2020-09-25 12:21:21,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-09-25 12:21:21,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 183. [2020-09-25 12:21:21,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-09-25 12:21:21,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 197 transitions. [2020-09-25 12:21:21,232 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 197 transitions. Word has length 131 [2020-09-25 12:21:21,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:21,232 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 197 transitions. [2020-09-25 12:21:21,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 12:21:21,233 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 197 transitions. [2020-09-25 12:21:21,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 12:21:21,234 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:21,234 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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 12:21:21,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 12:21:21,234 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:21,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:21,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1200683152, now seen corresponding path program 1 times [2020-09-25 12:21:21,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:21,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792965072] [2020-09-25 12:21:21,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:21,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:23,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:23,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:23,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 12:21:23,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:21:23,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2519 [2020-09-25 12:21:23,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:23,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:23,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 12:21:23,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 12:21:23,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 12:21:23,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:23,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:23,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:23,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:23,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:21:23,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:23,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:21:23,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:23,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:23,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:23,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:23,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:23,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:23,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 12:21:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:24,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:25,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:25,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 12:21:25,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:25,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1619 [2020-09-25 12:21:25,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:25,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:25,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 12:21:25,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:25,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 12:21:25,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:21:26,053 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 118 proven. 19 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 12:21:26,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792965072] [2020-09-25 12:21:26,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:26,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 12:21:26,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731156624] [2020-09-25 12:21:26,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 12:21:26,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:26,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 12:21:26,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-09-25 12:21:26,069 INFO L87 Difference]: Start difference. First operand 183 states and 197 transitions. Second operand 18 states.