java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/dll2n_prepend_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:02:12,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:02:12,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:02:12,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:02:12,749 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:02:12,751 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:02:12,753 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:02:12,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:02:12,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:02:12,772 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:02:12,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:02:12,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:02:12,775 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:02:12,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:02:12,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:02:12,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:02:12,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:02:12,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:02:12,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:02:12,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:02:12,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:02:12,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:02:12,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:02:12,803 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:02:12,805 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:02:12,805 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:02:12,805 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:02:12,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:02:12,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:02:12,811 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:02:12,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:02:12,813 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:02:12,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:02:12,814 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:02:12,819 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:02:12,819 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:02:12,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:02:12,820 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:02:12,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:02:12,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:02:12,822 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:02:12,823 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-20 13:02:12,845 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:02:12,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:02:12,847 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 13:02:12,848 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 13:02:12,848 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 13:02:12,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:02:12,848 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:02:12,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 13:02:12,849 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:02:12,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:02:12,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:02:12,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:02:12,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:02:12,851 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:02:12,851 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:02:12,851 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 13:02:12,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:02:12,852 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:02:12,852 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:02:12,852 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 13:02:12,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 13:02:12,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:02:12,853 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:02:12,853 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:02:12,853 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 13:02:12,853 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 13:02:12,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:02:12,854 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 13:02:12,854 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:02:12,888 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:02:12,901 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:02:12,906 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:02:12,907 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:02:12,908 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:02:12,909 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_prepend_equal.i [2019-09-20 13:02:12,983 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d6afd8a2/989ee76bdd8645778949a13d4e3be40a/FLAG3db4fd62a [2019-09-20 13:02:13,551 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:02:13,552 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2n_prepend_equal.i [2019-09-20 13:02:13,572 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d6afd8a2/989ee76bdd8645778949a13d4e3be40a/FLAG3db4fd62a [2019-09-20 13:02:13,897 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d6afd8a2/989ee76bdd8645778949a13d4e3be40a [2019-09-20 13:02:13,907 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:02:13,908 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:02:13,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:02:13,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:02:13,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:02:13,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:02:13" (1/1) ... [2019-09-20 13:02:13,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20a31688 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:13, skipping insertion in model container [2019-09-20 13:02:13,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:02:13" (1/1) ... [2019-09-20 13:02:13,924 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:02:13,981 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:02:14,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:02:14,421 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:02:14,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:02:14,525 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:02:14,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:14 WrapperNode [2019-09-20 13:02:14,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:02:14,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:02:14,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:02:14,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:02:14,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:14" (1/1) ... [2019-09-20 13:02:14,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:14" (1/1) ... [2019-09-20 13:02:14,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:14" (1/1) ... [2019-09-20 13:02:14,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:14" (1/1) ... [2019-09-20 13:02:14,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:14" (1/1) ... [2019-09-20 13:02:14,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:14" (1/1) ... [2019-09-20 13:02:14,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:14" (1/1) ... [2019-09-20 13:02:14,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:02:14,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:02:14,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:02:14,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:02:14,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-09-20 13:02:14,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:02:14,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:02:14,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-20 13:02:14,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-20 13:02:14,676 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-09-20 13:02:14,676 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-09-20 13:02:14,677 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2019-09-20 13:02:14,677 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2019-09-20 13:02:14,677 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_prepend [2019-09-20 13:02:14,677 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:02:14,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:02:14,678 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-20 13:02:14,678 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-20 13:02:14,678 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-20 13:02:14,678 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-20 13:02:14,678 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-20 13:02:14,679 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-20 13:02:14,679 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-20 13:02:14,679 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-20 13:02:14,679 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-20 13:02:14,679 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-20 13:02:14,679 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-20 13:02:14,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-20 13:02:14,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-20 13:02:14,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-20 13:02:14,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-20 13:02:14,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-20 13:02:14,680 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-20 13:02:14,681 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-20 13:02:14,681 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-20 13:02:14,681 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-20 13:02:14,681 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-20 13:02:14,681 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-20 13:02:14,681 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-20 13:02:14,682 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-20 13:02:14,682 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-20 13:02:14,682 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-20 13:02:14,682 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-20 13:02:14,682 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-20 13:02:14,682 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-20 13:02:14,683 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-20 13:02:14,683 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-20 13:02:14,683 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-20 13:02:14,683 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-20 13:02:14,683 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-20 13:02:14,683 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-20 13:02:14,684 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-20 13:02:14,684 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-20 13:02:14,684 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-20 13:02:14,684 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-20 13:02:14,684 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-20 13:02:14,684 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-20 13:02:14,684 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-20 13:02:14,685 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-20 13:02:14,685 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-20 13:02:14,685 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-20 13:02:14,685 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-20 13:02:14,685 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-20 13:02:14,685 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-20 13:02:14,685 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-20 13:02:14,686 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-20 13:02:14,686 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-20 13:02:14,686 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-20 13:02:14,686 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:02:14,686 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-20 13:02:14,686 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-20 13:02:14,686 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:02:14,687 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-20 13:02:14,687 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-20 13:02:14,687 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-20 13:02:14,687 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-20 13:02:14,687 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-20 13:02:14,688 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-20 13:02:14,688 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-20 13:02:14,688 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-20 13:02:14,688 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-20 13:02:14,688 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-20 13:02:14,688 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-20 13:02:14,688 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-20 13:02:14,689 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-20 13:02:14,689 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-20 13:02:14,689 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-20 13:02:14,689 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-20 13:02:14,689 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-20 13:02:14,689 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-20 13:02:14,690 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-20 13:02:14,690 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-20 13:02:14,690 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-20 13:02:14,690 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-20 13:02:14,690 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-20 13:02:14,690 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-20 13:02:14,691 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-20 13:02:14,691 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-20 13:02:14,691 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-20 13:02:14,691 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-20 13:02:14,691 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-20 13:02:14,691 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-20 13:02:14,691 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-20 13:02:14,692 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-20 13:02:14,692 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-20 13:02:14,692 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-20 13:02:14,692 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-20 13:02:14,692 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-20 13:02:14,692 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-20 13:02:14,692 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-20 13:02:14,693 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-20 13:02:14,693 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-20 13:02:14,693 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-20 13:02:14,693 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-20 13:02:14,693 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-20 13:02:14,693 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-20 13:02:14,693 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-20 13:02:14,694 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-20 13:02:14,694 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-20 13:02:14,694 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-20 13:02:14,694 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-20 13:02:14,694 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-09-20 13:02:14,694 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-09-20 13:02:14,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:02:14,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:02:14,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:02:14,695 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2019-09-20 13:02:14,695 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2019-09-20 13:02:14,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:02:14,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:02:14,696 INFO L130 BoogieDeclarations]: Found specification of procedure dll_prepend [2019-09-20 13:02:14,696 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:02:14,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:02:14,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-09-20 13:02:14,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:02:14,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:02:14,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:02:15,166 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-09-20 13:02:15,361 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:02:15,362 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-20 13:02:15,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:02:15 BoogieIcfgContainer [2019-09-20 13:02:15,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:02:15,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:02:15,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:02:15,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:02:15,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:02:13" (1/3) ... [2019-09-20 13:02:15,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de82674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:02:15, skipping insertion in model container [2019-09-20 13:02:15,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:14" (2/3) ... [2019-09-20 13:02:15,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de82674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:02:15, skipping insertion in model container [2019-09-20 13:02:15,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:02:15" (3/3) ... [2019-09-20 13:02:15,372 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_prepend_equal.i [2019-09-20 13:02:15,382 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:02:15,389 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:02:15,406 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:02:15,431 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 13:02:15,432 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:02:15,432 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 13:02:15,432 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:02:15,432 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:02:15,432 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:02:15,433 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:02:15,433 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:02:15,433 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:02:15,453 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2019-09-20 13:02:15,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-09-20 13:02:15,460 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:02:15,461 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:02:15,463 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:02:15,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:02:15,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1196981672, now seen corresponding path program 1 times [2019-09-20 13:02:15,471 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:02:15,472 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:02:15,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:15,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:02:15,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:02:15,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:02:15,724 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:02:15,724 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:02:15,728 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:02:15,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:02:15,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:02:15,746 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2019-09-20 13:02:15,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:02:15,781 INFO L93 Difference]: Finished difference Result 86 states and 105 transitions. [2019-09-20 13:02:15,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:02:15,782 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 30 [2019-09-20 13:02:15,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:02:15,791 INFO L225 Difference]: With dead ends: 86 [2019-09-20 13:02:15,791 INFO L226 Difference]: Without dead ends: 36 [2019-09-20 13:02:15,795 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:02:15,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-09-20 13:02:15,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-09-20 13:02:15,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-09-20 13:02:15,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2019-09-20 13:02:15,837 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 30 [2019-09-20 13:02:15,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:02:15,838 INFO L475 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2019-09-20 13:02:15,838 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:02:15,838 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2019-09-20 13:02:15,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-09-20 13:02:15,839 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:02:15,840 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:02:15,840 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:02:15,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:02:15,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1196990321, now seen corresponding path program 1 times [2019-09-20 13:02:15,841 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:02:15,841 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:02:15,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:15,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:02:15,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:02:16,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:02:16,153 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:02:16,153 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-09-20 13:02:16,156 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-20 13:02:16,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-20 13:02:16,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:02:16,158 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 10 states. [2019-09-20 13:02:16,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:02:16,336 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2019-09-20 13:02:16,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:02:16,337 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2019-09-20 13:02:16,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:02:16,339 INFO L225 Difference]: With dead ends: 43 [2019-09-20 13:02:16,339 INFO L226 Difference]: Without dead ends: 40 [2019-09-20 13:02:16,340 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:02:16,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-09-20 13:02:16,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2019-09-20 13:02:16,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-09-20 13:02:16,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2019-09-20 13:02:16,347 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 30 [2019-09-20 13:02:16,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:02:16,348 INFO L475 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2019-09-20 13:02:16,348 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-20 13:02:16,348 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2019-09-20 13:02:16,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-09-20 13:02:16,349 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:02:16,349 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:02:16,350 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:02:16,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:02:16,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1196988647, now seen corresponding path program 1 times [2019-09-20 13:02:16,350 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:02:16,351 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:02:16,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:16,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:02:16,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:16,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:02:16,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:02:16,433 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:02:16,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:02:16,434 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:02:16,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:02:16,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:02:16,435 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 5 states. [2019-09-20 13:02:16,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:02:16,476 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2019-09-20 13:02:16,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:02:16,477 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-09-20 13:02:16,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:02:16,478 INFO L225 Difference]: With dead ends: 66 [2019-09-20 13:02:16,478 INFO L226 Difference]: Without dead ends: 42 [2019-09-20 13:02:16,479 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:02:16,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-09-20 13:02:16,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2019-09-20 13:02:16,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-09-20 13:02:16,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2019-09-20 13:02:16,486 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 30 [2019-09-20 13:02:16,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:02:16,487 INFO L475 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2019-09-20 13:02:16,487 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:02:16,487 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2019-09-20 13:02:16,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-09-20 13:02:16,488 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:02:16,488 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:02:16,489 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:02:16,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:02:16,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1608181309, now seen corresponding path program 1 times [2019-09-20 13:02:16,489 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:02:16,489 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:02:16,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:16,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:02:16,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:16,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:02:16,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:02:16,573 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:02:16,573 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:02:16,574 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:02:16,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:02:16,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:02:16,575 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 3 states. [2019-09-20 13:02:16,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:02:16,606 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2019-09-20 13:02:16,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:02:16,607 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2019-09-20 13:02:16,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:02:16,608 INFO L225 Difference]: With dead ends: 71 [2019-09-20 13:02:16,608 INFO L226 Difference]: Without dead ends: 42 [2019-09-20 13:02:16,609 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:02:16,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-09-20 13:02:16,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2019-09-20 13:02:16,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-09-20 13:02:16,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2019-09-20 13:02:16,624 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 35 [2019-09-20 13:02:16,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:02:16,628 INFO L475 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2019-09-20 13:02:16,628 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:02:16,628 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2019-09-20 13:02:16,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-09-20 13:02:16,630 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:02:16,630 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:02:16,630 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:02:16,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:02:16,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1474167803, now seen corresponding path program 1 times [2019-09-20 13:02:16,631 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:02:16,631 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:02:16,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:16,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:02:16,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:16,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:02:16,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:02:16,758 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:02:16,758 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:02:16,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:02:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:02:16,926 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-20 13:02:16,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:02:16,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:02:16,974 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:02:16,974 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-09-20 13:02:16,975 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:02:16,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:02:16,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:02:16,976 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 6 states. [2019-09-20 13:02:17,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:02:17,045 INFO L93 Difference]: Finished difference Result 71 states and 79 transitions. [2019-09-20 13:02:17,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:02:17,046 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2019-09-20 13:02:17,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:02:17,048 INFO L225 Difference]: With dead ends: 71 [2019-09-20 13:02:17,048 INFO L226 Difference]: Without dead ends: 47 [2019-09-20 13:02:17,049 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:02:17,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-09-20 13:02:17,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2019-09-20 13:02:17,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-09-20 13:02:17,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2019-09-20 13:02:17,060 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 35 [2019-09-20 13:02:17,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:02:17,062 INFO L475 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2019-09-20 13:02:17,062 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:02:17,062 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2019-09-20 13:02:17,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-09-20 13:02:17,064 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:02:17,065 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:02:17,065 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:02:17,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:02:17,066 INFO L82 PathProgramCache]: Analyzing trace with hash -2012412261, now seen corresponding path program 1 times [2019-09-20 13:02:17,066 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:02:17,066 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:02:17,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:17,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:02:17,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:02:18,013 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-20 13:02:18,309 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:02:18,310 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:02:18,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2019-09-20 13:02:18,310 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-20 13:02:18,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-20 13:02:18,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:02:18,311 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 19 states. [2019-09-20 13:02:19,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:02:19,347 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2019-09-20 13:02:19,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-09-20 13:02:19,351 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 40 [2019-09-20 13:02:19,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:02:19,352 INFO L225 Difference]: With dead ends: 47 [2019-09-20 13:02:19,352 INFO L226 Difference]: Without dead ends: 45 [2019-09-20 13:02:19,353 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2019-09-20 13:02:19,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-09-20 13:02:19,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2019-09-20 13:02:19,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-09-20 13:02:19,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2019-09-20 13:02:19,360 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 40 [2019-09-20 13:02:19,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:02:19,360 INFO L475 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2019-09-20 13:02:19,360 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-20 13:02:19,360 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2019-09-20 13:02:19,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-09-20 13:02:19,361 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:02:19,362 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:02:19,362 INFO L418 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:02:19,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:02:19,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1192855508, now seen corresponding path program 1 times [2019-09-20 13:02:19,362 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:02:19,363 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:02:19,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:19,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:02:19,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:02:19,914 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2019-09-20 13:02:20,060 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2019-09-20 13:02:20,232 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:02:20,232 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:02:20,232 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:02:20,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:02:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:02:20,372 INFO L256 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 89 conjunts are in the unsatisfiable core [2019-09-20 13:02:20,377 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:02:20,458 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-09-20 13:02:20,458 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:02:20,463 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:02:20,464 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:02:20,464 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-09-20 13:02:20,668 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2019-09-20 13:02:20,669 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:02:20,680 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:02:20,687 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2019-09-20 13:02:20,688 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-20 13:02:20,697 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:02:20,697 INFO L464 ElimStorePlain]: Eliminatee |v_#memory_$Pointer$.base_BEFORE_CALL_1| vanished before elimination [2019-09-20 13:02:20,698 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:02:20,698 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:10 [2019-09-20 13:02:21,032 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-20 13:02:21,075 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:02:21,080 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-20 13:02:21,120 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:02:21,121 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-09-20 13:02:21,121 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:108, output treesize:112 [2019-09-20 13:02:24,002 WARN L191 SmtUtils]: Spent 2.79 s on a formula simplification that was a NOOP. DAG size: 55 [2019-09-20 13:02:24,006 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:02:33,503 WARN L191 SmtUtils]: Spent 7.23 s on a formula simplification that was a NOOP. DAG size: 61 [2019-09-20 13:02:33,507 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:02:33,584 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 468 treesize of output 464 [2019-09-20 13:02:33,584 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:02:33,620 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 468 treesize of output 464 [2019-09-20 13:02:33,620 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-20 13:02:33,805 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2019-09-20 13:02:33,806 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:02:33,808 INFO L496 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 6 dim-0 vars, and 2 xjuncts. [2019-09-20 13:02:33,808 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:937, output treesize:929 [2019-09-20 13:02:38,183 WARN L191 SmtUtils]: Spent 4.06 s on a formula simplification that was a NOOP. DAG size: 97 [2019-09-20 13:02:38,193 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:02:38,212 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-09-20 13:02:38,213 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:02:38,233 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:02:38,234 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 485 treesize of output 489 [2019-09-20 13:02:38,235 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-20 13:02:38,298 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:02:38,302 INFO L392 ElimStorePlain]: Different costs {16=[|v_#memory_$Pointer$.offset_BEFORE_CALL_4|], 52=[|v_old(#memory_$Pointer$.base)_AFTER_CALL_6|]} [2019-09-20 13:02:38,310 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-20 13:02:38,316 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 343 treesize of output 331 [2019-09-20 13:02:38,317 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-09-20 13:02:38,344 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:02:38,346 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-20 13:02:38,351 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-20 13:02:38,381 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:02:38,382 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 144 treesize of output 63 [2019-09-20 13:02:38,383 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-09-20 13:02:38,440 INFO L567 ElimStorePlain]: treesize reduction 32, result has 63.6 percent of original size [2019-09-20 13:02:38,441 INFO L496 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:02:38,442 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 9 variables, input treesize:971, output treesize:62 [2019-09-20 13:02:38,541 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-09-20 13:02:38,542 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:02:38,554 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:02:38,555 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-20 13:02:38,555 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:73, output treesize:62 [2019-09-20 13:02:38,661 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:02:38,662 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 33 [2019-09-20 13:02:38,662 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:02:38,664 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:02:38,666 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:02:38,666 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:02:38,666 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:63, output treesize:4 [2019-09-20 13:02:38,679 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:02:38,691 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:02:38,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 36 [2019-09-20 13:02:38,694 INFO L454 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-09-20 13:02:38,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-09-20 13:02:38,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1169, Unknown=1, NotChecked=0, Total=1260 [2019-09-20 13:02:38,695 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 36 states. [2019-09-20 13:02:45,261 WARN L191 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2019-09-20 13:02:46,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:02:46,499 INFO L93 Difference]: Finished difference Result 93 states and 104 transitions. [2019-09-20 13:02:46,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-09-20 13:02:46,503 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 42 [2019-09-20 13:02:46,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:02:46,505 INFO L225 Difference]: With dead ends: 93 [2019-09-20 13:02:46,505 INFO L226 Difference]: Without dead ends: 63 [2019-09-20 13:02:46,507 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=233, Invalid=2522, Unknown=1, NotChecked=0, Total=2756 [2019-09-20 13:02:46,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-09-20 13:02:46,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 45. [2019-09-20 13:02:46,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-09-20 13:02:46,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2019-09-20 13:02:46,516 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 42 [2019-09-20 13:02:46,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:02:46,516 INFO L475 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2019-09-20 13:02:46,516 INFO L476 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-09-20 13:02:46,516 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2019-09-20 13:02:46,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-09-20 13:02:46,517 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:02:46,517 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:02:46,518 INFO L418 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:02:46,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:02:46,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1192853834, now seen corresponding path program 1 times [2019-09-20 13:02:46,518 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:02:46,518 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:02:46,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:46,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:02:46,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:46,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:02:47,216 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2019-09-20 13:02:47,389 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2019-09-20 13:02:47,721 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 74 [2019-09-20 13:02:48,030 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-09-20 13:02:48,418 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:02:48,419 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:02:48,419 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:02:48,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:02:48,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:02:48,547 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 120 conjunts are in the unsatisfiable core [2019-09-20 13:02:48,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:02:48,625 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-09-20 13:02:48,626 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:02:48,633 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:02:48,634 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:02:48,634 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-09-20 13:02:48,660 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:02:48,661 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2019-09-20 13:02:48,662 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:02:48,701 INFO L567 ElimStorePlain]: treesize reduction 14, result has 65.9 percent of original size [2019-09-20 13:02:48,701 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:02:48,702 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:27 [2019-09-20 13:02:48,776 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_int_32|], 2=[|v_#memory_int_29|]} [2019-09-20 13:02:48,781 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-20 13:02:48,786 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2019-09-20 13:02:48,787 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:02:48,809 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:02:48,815 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-20 13:02:48,816 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2019-09-20 13:02:48,817 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-20 13:02:48,835 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:02:48,836 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:02:48,836 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:68, output treesize:35 [2019-09-20 13:02:48,905 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 14 [2019-09-20 13:02:48,906 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:02:48,922 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:02:48,923 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-20 13:02:48,924 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:54, output treesize:35 [2019-09-20 13:02:49,406 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-09-20 13:02:49,407 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:02:49,435 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:02:49,442 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2019-09-20 13:02:49,442 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-20 13:02:49,466 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:02:49,471 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2019-09-20 13:02:49,472 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-09-20 13:02:49,491 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:02:49,495 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-09-20 13:02:49,496 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-09-20 13:02:49,513 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:02:49,514 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:02:49,515 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:74, output treesize:13 [2019-09-20 13:02:49,601 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-20 13:02:49,637 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:02:49,640 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-20 13:02:49,670 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:02:49,671 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-09-20 13:02:49,672 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:113, output treesize:85 [2019-09-20 13:02:51,268 WARN L191 SmtUtils]: Spent 1.47 s on a formula simplification that was a NOOP. DAG size: 48 [2019-09-20 13:02:52,803 WARN L191 SmtUtils]: Spent 1.41 s on a formula simplification that was a NOOP. DAG size: 54 [2019-09-20 13:02:52,816 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-20 13:02:52,868 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:02:52,872 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-20 13:02:52,919 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:02:52,920 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2019-09-20 13:02:52,920 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:124, output treesize:128 [2019-09-20 13:02:58,478 WARN L191 SmtUtils]: Spent 5.43 s on a formula simplification that was a NOOP. DAG size: 64 [2019-09-20 13:02:58,495 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-20 13:02:58,611 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2019-09-20 13:02:58,611 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:02:58,612 INFO L496 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2019-09-20 13:02:58,612 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:692, output treesize:702