/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:26:25,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:26:25,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:26:25,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:26:25,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:26:25,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:26:25,431 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:26:25,433 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:26:25,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:26:25,436 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:26:25,437 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:26:25,439 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:26:25,439 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:26:25,440 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:26:25,441 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:26:25,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:26:25,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:26:25,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:26:25,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:26:25,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:26:25,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:26:25,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:26:25,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:26:25,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:26:25,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:26:25,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:26:25,458 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:26:25,459 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:26:25,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:26:25,460 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:26:25,461 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:26:25,462 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:26:25,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:26:25,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:26:25,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:26:25,465 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:26:25,466 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:26:25,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:26:25,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:26:25,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:26:25,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:26:25,469 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:26:25,511 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:26:25,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:26:25,514 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:26:25,514 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:26:25,514 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:26:25,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:26:25,515 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:26:25,515 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:26:25,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:26:25,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:26:25,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:26:25,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:26:25,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:26:25,517 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:26:25,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:26:25,518 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:26:25,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:26:25,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:26:25,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:26:25,519 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:26:25,520 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:26:25,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:26:25,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:26:25,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:26:25,521 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:26:25,521 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:26:25,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:26:25,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:26:25,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:26:25,522 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:26:26,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:26:26,044 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:26:26,049 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:26:26,051 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:26:26,051 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:26:26,052 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-1.i [2020-09-25 13:26:26,142 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9db538d30/d699dcc8eec84b059a848833b36e0075/FLAGcfcba52db [2020-09-25 13:26:26,809 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:26:26,810 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-1.i [2020-09-25 13:26:26,828 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9db538d30/d699dcc8eec84b059a848833b36e0075/FLAGcfcba52db [2020-09-25 13:26:27,060 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9db538d30/d699dcc8eec84b059a848833b36e0075 [2020-09-25 13:26:27,078 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:26:27,084 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:26:27,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:26:27,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:26:27,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:26:27,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:26:27" (1/1) ... [2020-09-25 13:26:27,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4630e6b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:27, skipping insertion in model container [2020-09-25 13:26:27,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:26:27" (1/1) ... [2020-09-25 13:26:27,112 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:26:27,189 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:26:27,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:26:27,714 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:26:27,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:26:27,911 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:26:27,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:27 WrapperNode [2020-09-25 13:26:27,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:26:27,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:26:27,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:26:27,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:26:27,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:27" (1/1) ... [2020-09-25 13:26:27,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:27" (1/1) ... [2020-09-25 13:26:27,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:27" (1/1) ... [2020-09-25 13:26:27,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:27" (1/1) ... [2020-09-25 13:26:27,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:27" (1/1) ... [2020-09-25 13:26:27,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:27" (1/1) ... [2020-09-25 13:26:28,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:27" (1/1) ... [2020-09-25 13:26:28,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:26:28,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:26:28,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:26:28,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:26:28,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:26:28,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:26:28,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:26:28,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 13:26:28,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 13:26:28,093 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-09-25 13:26:28,093 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2020-09-25 13:26:28,093 INFO L138 BoogieDeclarations]: Found implementation of procedure chain_node [2020-09-25 13:26:28,095 INFO L138 BoogieDeclarations]: Found implementation of procedure create_sll [2020-09-25 13:26:28,095 INFO L138 BoogieDeclarations]: Found implementation of procedure init_back_link [2020-09-25 13:26:28,095 INFO L138 BoogieDeclarations]: Found implementation of procedure reverse_dll [2020-09-25 13:26:28,095 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_fw_link [2020-09-25 13:26:28,095 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_next [2020-09-25 13:26:28,096 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_prev [2020-09-25 13:26:28,096 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:26:28,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:26:28,097 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 13:26:28,097 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 13:26:28,097 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 13:26:28,098 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 13:26:28,098 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 13:26:28,099 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 13:26:28,099 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 13:26:28,099 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 13:26:28,099 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 13:26:28,102 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 13:26:28,102 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 13:26:28,103 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 13:26:28,103 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 13:26:28,103 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 13:26:28,103 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 13:26:28,103 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 13:26:28,104 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 13:26:28,105 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 13:26:28,105 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 13:26:28,105 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 13:26:28,105 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 13:26:28,106 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 13:26:28,106 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 13:26:28,106 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 13:26:28,108 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 13:26:28,108 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 13:26:28,108 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 13:26:28,108 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 13:26:28,109 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 13:26:28,109 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 13:26:28,110 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 13:26:28,110 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 13:26:28,111 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 13:26:28,111 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 13:26:28,111 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 13:26:28,112 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 13:26:28,112 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 13:26:28,112 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 13:26:28,112 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 13:26:28,112 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 13:26:28,113 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 13:26:28,114 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 13:26:28,114 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 13:26:28,114 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 13:26:28,114 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 13:26:28,115 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 13:26:28,115 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 13:26:28,115 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 13:26:28,115 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 13:26:28,115 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 13:26:28,115 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 13:26:28,116 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 13:26:28,117 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 13:26:28,117 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 13:26:28,117 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 13:26:28,118 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 13:26:28,119 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 13:26:28,119 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 13:26:28,120 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 13:26:28,120 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 13:26:28,120 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 13:26:28,120 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 13:26:28,120 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 13:26:28,120 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:26:28,121 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 13:26:28,121 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 13:26:28,121 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 13:26:28,121 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 13:26:28,121 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 13:26:28,121 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 13:26:28,122 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 13:26:28,122 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 13:26:28,122 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 13:26:28,122 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 13:26:28,122 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 13:26:28,122 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 13:26:28,122 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 13:26:28,123 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 13:26:28,123 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 13:26:28,123 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 13:26:28,123 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 13:26:28,123 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 13:26:28,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 13:26:28,123 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 13:26:28,124 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 13:26:28,124 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 13:26:28,124 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 13:26:28,124 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 13:26:28,124 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 13:26:28,124 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 13:26:28,125 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 13:26:28,125 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 13:26:28,125 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 13:26:28,125 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 13:26:28,125 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 13:26:28,125 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 13:26:28,125 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 13:26:28,126 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 13:26:28,126 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 13:26:28,126 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 13:26:28,126 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 13:26:28,127 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 13:26:28,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:26:28,128 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-09-25 13:26:28,128 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2020-09-25 13:26:28,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 13:26:28,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 13:26:28,128 INFO L130 BoogieDeclarations]: Found specification of procedure chain_node [2020-09-25 13:26:28,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 13:26:28,129 INFO L130 BoogieDeclarations]: Found specification of procedure create_sll [2020-09-25 13:26:28,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 13:26:28,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-25 13:26:28,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 13:26:28,134 INFO L130 BoogieDeclarations]: Found specification of procedure init_back_link [2020-09-25 13:26:28,134 INFO L130 BoogieDeclarations]: Found specification of procedure reverse_dll [2020-09-25 13:26:28,135 INFO L130 BoogieDeclarations]: Found specification of procedure remove_fw_link [2020-09-25 13:26:28,135 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_next [2020-09-25 13:26:28,135 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_prev [2020-09-25 13:26:28,136 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:26:28,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:26:28,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:26:28,913 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:26:28,913 INFO L295 CfgBuilder]: Removed 33 assume(true) statements. [2020-09-25 13:26:28,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:26:28 BoogieIcfgContainer [2020-09-25 13:26:28,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:26:28,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:26:28,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:26:28,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:26:28,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:26:27" (1/3) ... [2020-09-25 13:26:28,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@314bcac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:26:28, skipping insertion in model container [2020-09-25 13:26:28,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:27" (2/3) ... [2020-09-25 13:26:28,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@314bcac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:26:28, skipping insertion in model container [2020-09-25 13:26:28,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:26:28" (3/3) ... [2020-09-25 13:26:28,931 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_to_dll_rev-1.i [2020-09-25 13:26:28,969 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:26:28,983 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:26:29,007 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:26:29,049 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:26:29,049 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:26:29,049 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:26:29,050 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:26:29,050 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:26:29,050 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:26:29,050 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:26:29,050 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:26:29,078 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2020-09-25 13:26:29,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 13:26:29,089 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:29,090 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] [2020-09-25 13:26:29,091 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:29,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:29,100 INFO L82 PathProgramCache]: Analyzing trace with hash 2069327278, now seen corresponding path program 1 times [2020-09-25 13:26:29,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:29,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861280979] [2020-09-25 13:26:29,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:29,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:29,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:29,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:29,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:29,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:29,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:29,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 13:26:29,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:26:29,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 449 [2020-09-25 13:26:29,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:29,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:29,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:29,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 13:26:29,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:29,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:26:29,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:29,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:29,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:29,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:29,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:26:29,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:29,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:26:29,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:29,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:29,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:29,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:29,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:29,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:29,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 13:26:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:29,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:29,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:29,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:29,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:29,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 13:26:29,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:26:29,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 13:26:29,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:29,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:29,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:29,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:26:29,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:29,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:29,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:26:29,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861280979] [2020-09-25 13:26:29,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:29,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:26:29,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145873840] [2020-09-25 13:26:29,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:26:29,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:29,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:26:29,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:26:29,969 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 4 states. [2020-09-25 13:26:30,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:30,501 INFO L93 Difference]: Finished difference Result 423 states and 572 transitions. [2020-09-25 13:26:30,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:26:30,503 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-09-25 13:26:30,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:30,521 INFO L225 Difference]: With dead ends: 423 [2020-09-25 13:26:30,522 INFO L226 Difference]: Without dead ends: 211 [2020-09-25 13:26:30,530 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 13:26:30,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-09-25 13:26:30,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 188. [2020-09-25 13:26:30,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-09-25 13:26:30,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 208 transitions. [2020-09-25 13:26:30,631 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 208 transitions. Word has length 41 [2020-09-25 13:26:30,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:30,631 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 208 transitions. [2020-09-25 13:26:30,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:26:30,632 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 208 transitions. [2020-09-25 13:26:30,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 13:26:30,636 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:30,637 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:30,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:26:30,637 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:30,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:30,638 INFO L82 PathProgramCache]: Analyzing trace with hash 2121642840, now seen corresponding path program 1 times [2020-09-25 13:26:30,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:30,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503514349] [2020-09-25 13:26:30,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:30,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:30,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:31,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:33,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:35,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:36,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:36,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-25 13:26:36,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:26:36,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5555 [2020-09-25 13:26:36,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:36,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:36,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-25 13:26:36,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:26:36,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-25 13:26:36,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:36,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:36,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:36,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:36,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:26:36,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:36,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:26:36,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:36,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:36,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:36,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:36,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:36,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:36,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 13:26:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:36,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:37,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:41,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:41,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 13:26:41,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:26:41,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 13:26:41,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:41,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:41,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 13:26:41,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:41,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 13:26:41,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:41,928 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2020-09-25 13:26:42,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 13:26:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:42,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:42,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:42,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:42,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 13:26:42,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:26:42,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 445 [2020-09-25 13:26:42,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:42,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:42,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:26:42,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:42,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 13:26:42,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:42,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-25 13:26:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:42,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:42,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:42,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:42,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:26:42,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:26:42,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-25 13:26:42,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:42,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:42,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:26:42,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:42,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:26:42,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:42,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 13:26:42,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:42,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:43,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:43,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 13:26:43,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:43,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-09-25 13:26:43,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:43,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:43,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:26:43,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:26:43,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 13:26:43,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:54,822 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2020-09-25 13:26:59,215 WARN L193 SmtUtils]: Spent 3.33 s on a formula simplification. DAG size of input: 250 DAG size of output: 140 [2020-09-25 13:26:59,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-25 13:26:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:59,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:59,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:59,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:26:59,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:59,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-09-25 13:26:59,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:59,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:59,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:26:59,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:26:59,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 13:26:59,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:27:00,226 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 27 [2020-09-25 13:27:00,323 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 13:27:00,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503514349] [2020-09-25 13:27:00,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:27:00,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-09-25 13:27:00,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799100774] [2020-09-25 13:27:00,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-09-25 13:27:00,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:27:00,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-09-25 13:27:00,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=843, Unknown=0, NotChecked=0, Total=930 [2020-09-25 13:27:00,328 INFO L87 Difference]: Start difference. First operand 188 states and 208 transitions. Second operand 31 states. [2020-09-25 13:27:01,800 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-09-25 13:27:02,157 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2020-09-25 13:27:02,507 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-09-25 13:27:03,017 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-09-25 13:27:05,602 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification that was a NOOP. DAG size: 164 [2020-09-25 13:27:08,336 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification that was a NOOP. DAG size: 159 [2020-09-25 13:27:11,465 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification that was a NOOP. DAG size: 171