/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 SequenceOfStatements --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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:12:40,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:12:40,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:12:40,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:12:40,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:12:40,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:12:40,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:12:40,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:12:40,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:12:40,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:12:40,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:12:40,694 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:12:40,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:12:40,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:12:40,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:12:40,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:12:40,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:12:40,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:12:40,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:12:40,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:12:40,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:12:40,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:12:40,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:12:40,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:12:40,724 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:12:40,724 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:12:40,725 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:12:40,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:12:40,726 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:12:40,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:12:40,728 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:12:40,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:12:40,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:12:40,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:12:40,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:12:40,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:12:40,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:12:40,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:12:40,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:12:40,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:12:40,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:12:40,739 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 [2020-10-27 01:12:40,815 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:12:40,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:12:40,821 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:12:40,823 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:12:40,823 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:12:40,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:12:40,825 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:12:40,825 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:12:40,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:12:40,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:12:40,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:12:40,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:12:40,826 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:12:40,826 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:12:40,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:12:40,827 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:12:40,829 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:12:40,829 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:12:40,829 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:12:40,829 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:12:40,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:12:40,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:12:40,830 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:12:40,830 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:12:40,830 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:12:40,831 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:12:40,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:12:40,832 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:12:40,832 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:12:40,832 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:12:41,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:12:41,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:12:41,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:12:41,372 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:12:41,373 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:12:41,374 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-2.i [2020-10-27 01:12:41,473 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a82ae1d45/00bc02253c5646b19f066b51d8e06390/FLAGb75ffc307 [2020-10-27 01:12:42,347 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:12:42,348 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-2.i [2020-10-27 01:12:42,370 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a82ae1d45/00bc02253c5646b19f066b51d8e06390/FLAGb75ffc307 [2020-10-27 01:12:42,559 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a82ae1d45/00bc02253c5646b19f066b51d8e06390 [2020-10-27 01:12:42,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:12:42,574 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:12:42,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:12:42,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:12:42,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:12:42,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:12:42" (1/1) ... [2020-10-27 01:12:42,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49760947 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:12:42, skipping insertion in model container [2020-10-27 01:12:42,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:12:42" (1/1) ... [2020-10-27 01:12:42,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:12:42,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:12:43,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:12:43,035 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:12:43,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:12:43,231 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:12:43,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:12:43 WrapperNode [2020-10-27 01:12:43,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:12:43,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:12:43,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:12:43,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:12:43,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:12:43" (1/1) ... [2020-10-27 01:12:43,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:12:43" (1/1) ... [2020-10-27 01:12:43,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:12:43" (1/1) ... [2020-10-27 01:12:43,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:12:43" (1/1) ... [2020-10-27 01:12:43,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:12:43" (1/1) ... [2020-10-27 01:12:43,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:12:43" (1/1) ... [2020-10-27 01:12:43,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:12:43" (1/1) ... [2020-10-27 01:12:43,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:12:43,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:12:43,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:12:43,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:12:43,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:12:43" (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 [2020-10-27 01:12:43,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:12:43,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:12:43,438 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:12:43,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-27 01:12:43,439 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-27 01:12:43,439 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-10-27 01:12:43,440 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2020-10-27 01:12:43,440 INFO L138 BoogieDeclarations]: Found implementation of procedure chain_node [2020-10-27 01:12:43,440 INFO L138 BoogieDeclarations]: Found implementation of procedure create_sll [2020-10-27 01:12:43,440 INFO L138 BoogieDeclarations]: Found implementation of procedure init_back_link [2020-10-27 01:12:43,441 INFO L138 BoogieDeclarations]: Found implementation of procedure reverse_dll [2020-10-27 01:12:43,441 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_fw_link [2020-10-27 01:12:43,441 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_next [2020-10-27 01:12:43,442 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_prev [2020-10-27 01:12:43,442 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:12:43,443 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:12:43,443 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:12:43,443 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 01:12:43,443 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 01:12:43,443 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:12:43,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:12:43,444 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-27 01:12:43,444 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-27 01:12:43,444 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-27 01:12:43,444 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-27 01:12:43,444 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-27 01:12:43,444 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-27 01:12:43,445 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-27 01:12:43,445 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-27 01:12:43,445 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-27 01:12:43,445 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-27 01:12:43,445 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-27 01:12:43,445 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-27 01:12:43,445 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-27 01:12:43,446 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-27 01:12:43,446 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-27 01:12:43,446 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-27 01:12:43,446 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-27 01:12:43,446 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-27 01:12:43,446 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-27 01:12:43,446 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-27 01:12:43,447 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-27 01:12:43,447 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-27 01:12:43,447 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-27 01:12:43,447 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-27 01:12:43,447 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-27 01:12:43,447 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-27 01:12:43,448 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-27 01:12:43,448 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-27 01:12:43,448 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-27 01:12:43,448 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-27 01:12:43,448 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-27 01:12:43,448 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-27 01:12:43,448 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-27 01:12:43,449 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-27 01:12:43,449 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-27 01:12:43,449 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-27 01:12:43,449 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-27 01:12:43,449 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-27 01:12:43,449 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-27 01:12:43,449 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-27 01:12:43,450 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-27 01:12:43,450 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-27 01:12:43,450 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-27 01:12:43,450 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-27 01:12:43,450 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-27 01:12:43,450 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-27 01:12:43,451 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-27 01:12:43,451 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-27 01:12:43,451 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-27 01:12:43,451 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-27 01:12:43,451 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-27 01:12:43,451 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-27 01:12:43,451 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 01:12:43,452 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-27 01:12:43,452 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-27 01:12:43,452 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 01:12:43,452 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-27 01:12:43,452 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-27 01:12:43,452 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-27 01:12:43,452 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-27 01:12:43,453 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-27 01:12:43,453 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-27 01:12:43,453 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 01:12:43,453 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-27 01:12:43,453 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-27 01:12:43,453 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-27 01:12:43,453 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-27 01:12:43,454 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-27 01:12:43,454 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-27 01:12:43,454 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-27 01:12:43,454 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-27 01:12:43,454 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-27 01:12:43,454 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-27 01:12:43,454 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-27 01:12:43,454 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-27 01:12:43,455 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-27 01:12:43,455 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-27 01:12:43,455 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-27 01:12:43,455 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-27 01:12:43,455 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-27 01:12:43,455 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-27 01:12:43,455 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-27 01:12:43,455 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-27 01:12:43,456 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-27 01:12:43,456 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-27 01:12:43,456 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-27 01:12:43,456 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-27 01:12:43,456 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-27 01:12:43,456 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-27 01:12:43,456 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-27 01:12:43,457 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-27 01:12:43,457 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-27 01:12:43,457 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-27 01:12:43,457 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-27 01:12:43,457 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-27 01:12:43,457 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-27 01:12:43,457 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-27 01:12:43,458 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-27 01:12:43,458 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-27 01:12:43,458 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-27 01:12:43,458 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-27 01:12:43,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 01:12:43,458 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-10-27 01:12:43,458 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2020-10-27 01:12:43,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 01:12:43,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 01:12:43,459 INFO L130 BoogieDeclarations]: Found specification of procedure chain_node [2020-10-27 01:12:43,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 01:12:43,459 INFO L130 BoogieDeclarations]: Found specification of procedure create_sll [2020-10-27 01:12:43,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-27 01:12:43,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:12:43,460 INFO L130 BoogieDeclarations]: Found specification of procedure init_back_link [2020-10-27 01:12:43,460 INFO L130 BoogieDeclarations]: Found specification of procedure reverse_dll [2020-10-27 01:12:43,460 INFO L130 BoogieDeclarations]: Found specification of procedure remove_fw_link [2020-10-27 01:12:43,460 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_next [2020-10-27 01:12:43,460 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_prev [2020-10-27 01:12:43,460 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:12:43,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:12:43,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:12:43,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:12:43,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:12:43,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:12:44,367 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:12:44,367 INFO L298 CfgBuilder]: Removed 33 assume(true) statements. [2020-10-27 01:12:44,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:12:44 BoogieIcfgContainer [2020-10-27 01:12:44,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:12:44,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:12:44,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:12:44,378 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:12:44,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:12:42" (1/3) ... [2020-10-27 01:12:44,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2bf6b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:12:44, skipping insertion in model container [2020-10-27 01:12:44,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:12:43" (2/3) ... [2020-10-27 01:12:44,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2bf6b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:12:44, skipping insertion in model container [2020-10-27 01:12:44,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:12:44" (3/3) ... [2020-10-27 01:12:44,383 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_to_dll_rev-2.i [2020-10-27 01:12:44,397 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:12:44,404 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:12:44,422 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:12:44,454 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:12:44,454 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:12:44,454 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:12:44,454 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:12:44,454 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:12:44,454 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:12:44,455 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:12:44,455 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:12:44,479 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states. [2020-10-27 01:12:44,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 01:12:44,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:12:44,491 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] [2020-10-27 01:12:44,491 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:12:44,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:12:44,499 INFO L82 PathProgramCache]: Analyzing trace with hash -14860730, now seen corresponding path program 1 times [2020-10-27 01:12:44,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:12:44,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028768960] [2020-10-27 01:12:44,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:12:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:44,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:44,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:44,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:45,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:45,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 01:12:45,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:12:45,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-10-27 01:12:45,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:45,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:12:45,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 01:12:45,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:12:45,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 01:12:45,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:12:45,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:45,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:45,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:45,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:12:45,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:45,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 01:12:45,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:45,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:12:45,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:12:45,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:12:45,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:45,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:12:45,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:45,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:45,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:45,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:45,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:45,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 01:12:45,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:12:45,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 01:12:45,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:45,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:12:45,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:12:45,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:12:45,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:45,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:12:45,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028768960] [2020-10-27 01:12:45,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:12:45,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:12:45,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928859462] [2020-10-27 01:12:45,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:12:45,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:12:45,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:12:45,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:12:45,387 INFO L87 Difference]: Start difference. First operand 122 states. Second operand 4 states. [2020-10-27 01:12:45,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:12:45,817 INFO L93 Difference]: Finished difference Result 241 states and 393 transitions. [2020-10-27 01:12:45,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 01:12:45,819 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-27 01:12:45,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:12:45,831 INFO L225 Difference]: With dead ends: 241 [2020-10-27 01:12:45,831 INFO L226 Difference]: Without dead ends: 120 [2020-10-27 01:12:45,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:12:45,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-27 01:12:45,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 110. [2020-10-27 01:12:45,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-27 01:12:45,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 130 transitions. [2020-10-27 01:12:45,901 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 130 transitions. Word has length 26 [2020-10-27 01:12:45,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:12:45,901 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 130 transitions. [2020-10-27 01:12:45,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:12:45,902 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 130 transitions. [2020-10-27 01:12:45,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 01:12:45,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:12:45,905 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2020-10-27 01:12:45,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:12:45,905 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:12:45,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:12:45,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1549082311, now seen corresponding path program 1 times [2020-10-27 01:12:45,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:12:45,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560532145] [2020-10-27 01:12:45,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:12:46,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:46,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:47,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:48,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:49,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:50,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:51,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:51,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 01:12:51,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 01:12:51,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 01:12:51,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:51,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-27 01:12:51,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:12:51,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 01:12:51,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:12:51,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:12:51,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:51,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:51,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:51,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:12:51,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:51,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:12:51,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:51,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:12:51,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:12:51,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:12:51,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:51,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:12:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:51,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:51,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:52,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:53,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:56,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:56,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:56,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 01:12:56,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 01:12:56,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 01:12:56,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:56,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 01:12:56,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:12:56,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 01:12:56,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:56,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:12:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:56,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:56,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:56,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 01:12:56,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:56,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 01:12:56,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:56,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:12:56,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:12:56,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 01:12:56,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:56,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:12:56,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:56,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:56,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:56,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:12:56,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:12:56,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:12:56,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:56,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:12:56,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:12:56,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:12:56,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:56,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:12:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:56,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:56,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:56,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:56,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 01:12:56,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:12:56,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-27 01:12:56,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:56,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:12:56,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:12:56,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:12:56,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:57,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:12:57,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:57,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:57,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:57,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:57,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:12:57,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:12:57,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 01:12:57,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:57,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:12:57,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:12:57,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:12:57,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:12:57,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 01:12:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:12:57,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:57,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:12:57,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:12:57,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 01:12:57,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:12:57,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-27 01:12:57,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:12:57,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 01:12:57,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:12:57,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 01:12:57,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:01,079 WARN L193 SmtUtils]: Spent 2.69 s on a formula simplification. DAG size of input: 119 DAG size of output: 113 [2020-10-27 01:13:01,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:13:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:01,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:01,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:01,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:13:01,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:01,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 01:13:01,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:01,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:13:01,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:13:01,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:13:01,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:01,433 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-27 01:13:01,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [560532145] [2020-10-27 01:13:01,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:13:01,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 01:13:01,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130051957] [2020-10-27 01:13:01,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 01:13:01,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:13:01,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 01:13:01,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2020-10-27 01:13:01,443 INFO L87 Difference]: Start difference. First operand 110 states and 130 transitions. Second operand 23 states. [2020-10-27 01:13:02,421 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2020-10-27 01:13:03,786 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 127 [2020-10-27 01:13:08,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:13:08,412 INFO L93 Difference]: Finished difference Result 178 states and 220 transitions. [2020-10-27 01:13:08,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 01:13:08,413 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 62 [2020-10-27 01:13:08,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:13:08,419 INFO L225 Difference]: With dead ends: 178 [2020-10-27 01:13:08,419 INFO L226 Difference]: Without dead ends: 173 [2020-10-27 01:13:08,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=156, Invalid=1250, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 01:13:08,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-27 01:13:08,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 132. [2020-10-27 01:13:08,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-27 01:13:08,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 157 transitions. [2020-10-27 01:13:08,470 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 157 transitions. Word has length 62 [2020-10-27 01:13:08,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:13:08,471 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 157 transitions. [2020-10-27 01:13:08,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 01:13:08,479 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 157 transitions. [2020-10-27 01:13:08,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 01:13:08,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:13:08,484 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2020-10-27 01:13:08,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:13:08,485 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:13:08,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:13:08,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1598377699, now seen corresponding path program 1 times [2020-10-27 01:13:08,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:13:08,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636831742] [2020-10-27 01:13:08,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:13:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:08,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:09,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:10,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:10,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:12,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:13,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:13,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 01:13:13,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 01:13:13,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 01:13:13,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:13,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-27 01:13:13,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:13:13,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 01:13:13,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:13,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:13:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:13,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:13,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:13,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:13:13,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:13,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:13:13,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:13,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:13:13,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:13,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:13:13,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:13,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:13:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:13,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:14,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:15,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:15,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:16,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:17,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:18,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:18,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:18,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:18,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 01:13:18,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 01:13:18,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 01:13:18,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:18,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 01:13:18,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:13:18,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 01:13:18,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:19,133 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 32 [2020-10-27 01:13:19,313 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2020-10-27 01:13:19,460 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-10-27 01:13:19,608 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 32 [2020-10-27 01:13:19,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:13:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:19,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:19,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:19,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:19,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 01:13:19,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:13:19,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-27 01:13:19,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:19,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:13:19,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:19,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:13:19,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:19,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:13:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:19,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:19,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:19,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:13:19,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:19,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 01:13:19,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:19,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:13:19,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:19,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:13:19,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:20,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:13:20,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:20,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:20,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:20,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:20,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 01:13:20,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:13:20,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-27 01:13:20,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:20,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 01:13:20,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:13:20,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 01:13:20,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:23,169 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 178 DAG size of output: 110 [2020-10-27 01:13:23,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:13:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:23,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:23,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:23,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:13:23,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:23,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 01:13:23,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:23,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:13:23,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:13:23,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:13:23,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:23,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 01:13:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:23,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:23,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:23,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 01:13:23,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:23,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 01:13:23,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:23,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 01:13:23,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:13:23,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 01:13:23,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:25,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:13:25,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:25,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:25,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:25,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:13:25,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:25,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 01:13:25,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:25,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:13:25,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:13:25,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:13:25,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:25,833 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-27 01:13:25,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636831742] [2020-10-27 01:13:25,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:13:25,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 01:13:25,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834585377] [2020-10-27 01:13:25,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 01:13:25,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:13:25,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 01:13:25,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2020-10-27 01:13:25,838 INFO L87 Difference]: Start difference. First operand 132 states and 157 transitions. Second operand 24 states. [2020-10-27 01:13:27,604 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 01:13:28,946 WARN L193 SmtUtils]: Spent 891.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-27 01:13:29,468 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-10-27 01:13:30,145 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-10-27 01:13:36,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:13:36,107 INFO L93 Difference]: Finished difference Result 184 states and 226 transitions. [2020-10-27 01:13:36,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 01:13:36,109 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 64 [2020-10-27 01:13:36,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:13:36,112 INFO L225 Difference]: With dead ends: 184 [2020-10-27 01:13:36,112 INFO L226 Difference]: Without dead ends: 179 [2020-10-27 01:13:36,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=150, Invalid=1256, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 01:13:36,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-27 01:13:36,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 144. [2020-10-27 01:13:36,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-27 01:13:36,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 170 transitions. [2020-10-27 01:13:36,142 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 170 transitions. Word has length 64 [2020-10-27 01:13:36,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:13:36,143 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 170 transitions. [2020-10-27 01:13:36,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 01:13:36,143 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 170 transitions. [2020-10-27 01:13:36,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 01:13:36,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:13:36,144 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:13:36,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:13:36,145 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:13:36,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:13:36,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1076023089, now seen corresponding path program 1 times [2020-10-27 01:13:36,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:13:36,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2147479675] [2020-10-27 01:13:36,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:13:36,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:36,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:37,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:38,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:41,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:41,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 01:13:41,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:13:41,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 01:13:41,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:41,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-27 01:13:41,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:13:41,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 01:13:41,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:13:41,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:13:41,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:41,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:41,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:41,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:13:41,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:41,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 01:13:41,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:41,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:13:41,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:41,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:13:41,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:13:41,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:13:41,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:41,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:42,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:44,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:44,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 01:13:44,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:13:44,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3349 [2020-10-27 01:13:44,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:44,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 01:13:44,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:44,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 01:13:44,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 01:13:45,271 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 27 [2020-10-27 01:13:45,487 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2020-10-27 01:13:45,876 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2020-10-27 01:13:45,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:13:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:45,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:46,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:46,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 01:13:46,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:46,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 01:13:46,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:46,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:13:46,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:46,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:13:46,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:46,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:13:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:46,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:46,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:46,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:13:46,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:46,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 01:13:46,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:46,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:13:46,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:13:46,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:13:46,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:46,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:13:46,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:46,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:46,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:46,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 01:13:46,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:46,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-27 01:13:46,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:46,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 01:13:46,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:13:46,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 01:13:46,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:46,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:13:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:46,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:46,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:46,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:13:46,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:46,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 01:13:46,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:46,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:13:46,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:13:46,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:13:46,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:46,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 01:13:46,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:46,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:46,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:46,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 01:13:46,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:46,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-27 01:13:46,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:46,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 01:13:46,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:13:46,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 01:13:46,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:47,832 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2020-10-27 01:13:58,711 WARN L193 SmtUtils]: Spent 10.23 s on a formula simplification. DAG size of input: 235 DAG size of output: 211 [2020-10-27 01:13:59,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:13:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:13:59,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:13:59,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:13:59,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:13:59,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:13:59,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 01:13:59,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:13:59,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:13:59,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:13:59,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:13:59,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:13:59,772 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2020-10-27 01:13:59,841 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 01:13:59,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2147479675] [2020-10-27 01:13:59,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:13:59,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-27 01:13:59,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330567249] [2020-10-27 01:13:59,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-27 01:13:59,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:13:59,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-27 01:13:59,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2020-10-27 01:13:59,843 INFO L87 Difference]: Start difference. First operand 144 states and 170 transitions. Second operand 31 states. [2020-10-27 01:14:00,979 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-10-27 01:14:01,260 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2020-10-27 01:14:08,841 WARN L193 SmtUtils]: Spent 7.16 s on a formula simplification. DAG size of input: 224 DAG size of output: 215 [2020-10-27 01:14:10,294 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-10-27 01:14:11,034 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 82 [2020-10-27 01:14:12,089 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-27 01:14:18,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:14:18,084 INFO L93 Difference]: Finished difference Result 202 states and 250 transitions. [2020-10-27 01:14:18,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 01:14:18,086 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 68 [2020-10-27 01:14:18,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:14:18,091 INFO L225 Difference]: With dead ends: 202 [2020-10-27 01:14:18,091 INFO L226 Difference]: Without dead ends: 197 [2020-10-27 01:14:18,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 23.7s TimeCoverageRelationStatistics Valid=201, Invalid=2151, Unknown=0, NotChecked=0, Total=2352 [2020-10-27 01:14:18,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-27 01:14:18,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 146. [2020-10-27 01:14:18,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-27 01:14:18,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 173 transitions. [2020-10-27 01:14:18,132 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 173 transitions. Word has length 68 [2020-10-27 01:14:18,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:14:18,134 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 173 transitions. [2020-10-27 01:14:18,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-27 01:14:18,134 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 173 transitions. [2020-10-27 01:14:18,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-27 01:14:18,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:14:18,138 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-27 01:14:18,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 01:14:18,138 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:14:18,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:14:18,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1239093929, now seen corresponding path program 1 times [2020-10-27 01:14:18,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:14:18,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970207935] [2020-10-27 01:14:18,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:14:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:18,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:18,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:19,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:20,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:23,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:23,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 01:14:23,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:14:23,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 01:14:23,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:23,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 01:14:23,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:14:23,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 01:14:23,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:23,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:14:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:23,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:23,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:23,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:14:23,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:23,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:14:23,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:23,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:14:23,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:23,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:14:23,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:23,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:14:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:23,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:23,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:25,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:25,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:28,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:28,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 01:14:28,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:14:28,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 01:14:28,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:28,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 01:14:28,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:28,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 01:14:28,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:28,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:14:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:28,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:28,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:28,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 01:14:28,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:28,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 01:14:28,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:28,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:14:28,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:28,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 01:14:28,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:28,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:14:28,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:28,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:28,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:28,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:14:28,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:28,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 01:14:28,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:28,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:14:28,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:28,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:14:28,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:28,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:14:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:28,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:28,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:28,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 01:14:28,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:28,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 01:14:28,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:28,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 01:14:28,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:28,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 01:14:28,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:28,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:14:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:28,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:28,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:28,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:14:28,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:28,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 01:14:28,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:28,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:14:28,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:28,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:14:28,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:28,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 01:14:28,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:28,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:28,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:28,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 01:14:28,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:28,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 01:14:28,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:28,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 01:14:28,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:14:28,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 01:14:28,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:29,414 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2020-10-27 01:14:29,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:14:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:29,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:29,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:29,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:14:29,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:29,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 01:14:29,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:29,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:14:29,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:14:29,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:14:29,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:29,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 01:14:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:29,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:29,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:29,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 01:14:29,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:29,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 01:14:29,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:29,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 01:14:29,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:14:29,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 01:14:29,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:29,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:14:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:29,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:29,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:29,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:14:29,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:29,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 01:14:29,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:29,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:14:29,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:14:29,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:14:29,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:29,997 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 34 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-27 01:14:29,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970207935] [2020-10-27 01:14:29,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:14:29,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 01:14:29,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757889007] [2020-10-27 01:14:29,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 01:14:29,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:14:30,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 01:14:30,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2020-10-27 01:14:30,000 INFO L87 Difference]: Start difference. First operand 146 states and 173 transitions. Second operand 24 states. [2020-10-27 01:14:30,865 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-10-27 01:14:31,177 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 01:14:34,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:14:34,432 INFO L93 Difference]: Finished difference Result 186 states and 227 transitions. [2020-10-27 01:14:34,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 01:14:34,434 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 75 [2020-10-27 01:14:34,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:14:34,437 INFO L225 Difference]: With dead ends: 186 [2020-10-27 01:14:34,437 INFO L226 Difference]: Without dead ends: 181 [2020-10-27 01:14:34,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=173, Invalid=1467, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 01:14:34,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-27 01:14:34,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 146. [2020-10-27 01:14:34,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-27 01:14:34,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 172 transitions. [2020-10-27 01:14:34,464 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 172 transitions. Word has length 75 [2020-10-27 01:14:34,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:14:34,465 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 172 transitions. [2020-10-27 01:14:34,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 01:14:34,465 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 172 transitions. [2020-10-27 01:14:34,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-27 01:14:34,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:14:34,467 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:14:34,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 01:14:34,467 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:14:34,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:14:34,468 INFO L82 PathProgramCache]: Analyzing trace with hash 2047681946, now seen corresponding path program 1 times [2020-10-27 01:14:34,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:14:34,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843185998] [2020-10-27 01:14:34,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:14:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:34,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:35,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:36,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:39,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:39,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 01:14:39,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:14:39,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 01:14:39,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:39,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-27 01:14:39,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:14:39,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 01:14:39,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:39,885 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 30 [2020-10-27 01:14:40,114 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 33 [2020-10-27 01:14:40,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:14:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:40,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:40,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:40,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:14:40,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:40,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 01:14:40,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:40,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:14:40,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:40,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:14:40,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:40,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:14:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:40,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:40,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:44,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:44,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 01:14:44,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:14:44,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4205 [2020-10-27 01:14:44,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:44,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 01:14:44,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:44,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 01:14:44,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:45,371 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 41 [2020-10-27 01:14:46,561 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 161 DAG size of output: 68 [2020-10-27 01:14:47,720 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 112 DAG size of output: 61 [2020-10-27 01:14:48,907 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 152 DAG size of output: 89 [2020-10-27 01:14:49,683 WARN L193 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 71 [2020-10-27 01:14:49,961 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-27 01:14:49,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:14:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:49,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:50,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:50,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 01:14:50,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:50,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-27 01:14:50,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:50,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 01:14:50,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:14:50,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 01:14:50,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:54,013 WARN L193 SmtUtils]: Spent 2.95 s on a formula simplification. DAG size of input: 140 DAG size of output: 130 [2020-10-27 01:14:54,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:14:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:54,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:54,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:54,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:14:54,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:54,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 01:14:54,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:54,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:14:54,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:14:54,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:14:54,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:54,819 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-10-27 01:14:54,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 01:14:54,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:54,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:54,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:55,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:55,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 01:14:55,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:14:55,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-27 01:14:55,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:55,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 01:14:55,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:14:55,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 01:14:55,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:14:57,606 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2020-10-27 01:15:26,274 WARN L193 SmtUtils]: Spent 27.22 s on a formula simplification. DAG size of input: 450 DAG size of output: 272 [2020-10-27 01:15:27,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:15:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:15:27,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:15:27,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:15:27,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:15:27,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:15:27,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 01:15:27,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:15:27,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:15:27,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:15:27,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:15:27,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:15:28,310 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-10-27 01:15:28,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 01:15:28,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:15:28,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:15:28,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:15:28,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 01:15:28,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:15:28,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-27 01:15:28,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:15:28,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 01:15:28,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:15:28,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 01:15:28,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:15:29,061 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2020-10-27 01:15:31,793 WARN L193 SmtUtils]: Spent 2.42 s on a formula simplification. DAG size of input: 103 DAG size of output: 98 [2020-10-27 01:15:32,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 01:15:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:15:32,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:15:32,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:15:32,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 01:15:32,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:15:32,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 01:15:32,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:15:32,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:15:32,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 01:15:32,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:15:32,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:15:32,773 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2020-10-27 01:15:32,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 01:15:32,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:15:32,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:15:32,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:15:32,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 01:15:32,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:15:32,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 01:15:32,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:15:32,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:15:32,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:15:32,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 01:15:32,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:15:33,676 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 01:15:33,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843185998] [2020-10-27 01:15:33,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:15:33,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-27 01:15:33,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742463472] [2020-10-27 01:15:33,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-27 01:15:33,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:15:33,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-27 01:15:33,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1020, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 01:15:33,680 INFO L87 Difference]: Start difference. First operand 146 states and 172 transitions. Second operand 34 states. [2020-10-27 01:15:35,473 WARN L193 SmtUtils]: Spent 733.00 ms on a formula simplification. DAG size of input: 295 DAG size of output: 54 [2020-10-27 01:15:36,485 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2020-10-27 01:15:55,367 WARN L193 SmtUtils]: Spent 18.18 s on a formula simplification. DAG size of input: 332 DAG size of output: 322 [2020-10-27 01:16:21,263 WARN L193 SmtUtils]: Spent 22.37 s on a formula simplification. DAG size of input: 236 DAG size of output: 211 [2020-10-27 01:16:23,529 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 69 [2020-10-27 01:16:38,713 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 120 DAG size of output: 106